A gene showing co-dominance has (a) alleles that are recessive to each other (b) both alleles independently expressed in the heterozygote (c) one allele dominant on the other (d) alleles tightly linked on the same chromosome.

A gene showing co-dominance has
(a) alleles that are recessive to each other
(b) both alleles independently expressed in the
heterozygote
(c) one allele dominant on the other
(d) alleles tightly linked on the same chromosome.
by

1 Answer

Answer :

(b) both alleles independently expressed in the
heterozygote
by

Related questions

Haploids are able to express both recessive and dominant alleles/mutations because there are (a) many alleles for each gene (b) two alleles for each gene (c) only one allele for each gene in the individual (d) only one allele in a gene.

Description : Haploids are able to express both recessive and dominant alleles/mutations because there are (a) many alleles for each gene (b) two alleles for each gene (c) only one allele for each gene in the individual (d) only one allele in a gene.

Last Answer : (c) only one allele for each gene in the individual

Situations in which one allele for a gene is not completely dominant over another allele for that gene are called a. multiple alleles. b. incomplete dominance. c. polygenic inheritance. d. multiple genes.

Description : Situations in which one allele for a gene is not completely dominant over another allele for that gene are called a. multiple alleles. b. incomplete dominance. c. polygenic inheritance. d. multiple genes.

Last Answer : b. incomplete dominance.

What type of inheritance pattern (are the A and B alleles to each other (Autosomal dominant-Regular dominant-recessive relationship, X linked, co-dominant, incomplete dominant)?

Description : What type of inheritance pattern (are the A and B alleles to each other (Autosomal dominant-Regular dominant-recessive relationship, X linked, co-dominant, incomplete dominant)?

Last Answer : Incomplete dominance

.Match the terms in column I with their description in column II and choose the correct option. Column I Column II A. Dominance (i) Many genes govern a single character B. Co-dominance (ii) In a heterozygous organism only one allele expresses itself C. Pleiotropy (iii) In a heterozygous organism both alleles express themselves fully D. Polygenic (iv) A single gene inheritance influences many characters A B C D (a) (iv) (i) (ii) (iii) (b) (iv) (iii) (i) (ii) (c) (ii) (i) (iv) (iii) (d) (ii) (iii) (iv) (i)

Description : .Match the terms in column I with their description in column II and choose the correct option. Column I Column II A. Dominance (i) Many genes govern a single character B. Co-dominance (ii) In a heterozygous organism only one allele ... (i) (ii) (c) (ii) (i) (iv) (iii) (d) (ii) (iii) (iv) (i)

Last Answer : (d) (ii) (iii) (iv) (i)

When dominant and recessive alleles express itself together it is called (a) co-dominance (b) dominance (c) amphidominance (d) pseudodominance.

Description : When dominant and recessive alleles express itself together it is called (a) co-dominance (b) dominance (c) amphidominance (d) pseudodominance.

Last Answer : (a) co-dominance

Which type of Mendelian inherited condition results in both genders being affected equally in a vertical pattern? a) Automosomal dominant inheritance An individual who has an autosomal dominant inherited condition carries a gene mutation for that condition on one chromosome of a pair. b) Automosomal recessive inheritance The pattern of inheritance in autosomal recessive inherited conditions is different from that of autosomal dominant inherited conditions in that it is more horizontal than vertical, with relatives of a single generation tending to have the condition. c) X-linked inheritance X-linked conditions may be inherited in families in recessive or dominant patterns.

Description : Which type of Mendelian inherited condition results in both genders being affected equally in a vertical pattern? a) Automosomal dominant inheritance An individual who has an autosomal dominant ... that combine during early embryonic development leading to incomplete closure of the neural tube.

Last Answer : a) Automosomal dominant inheritance An individual who has an autosomal dominant inherited condition carries a gene mutation for that condition on one chromosome of a pair.

Which one of the following cannot be explained on the basis of Mendel’s law of dominance? (a) The discrete unit controlling a particular character is called a factor. (b) Out of one pair of factors one is dominant, and the other recessive. (c) Alleles do not show any blending and both the characters recover as such in F2 generation. (d) Factors occur in pairs.

Description : Which one of the following cannot be explained on the basis of Mendel's law of dominance? (a) The discrete unit controlling a particular character is called a factor. (b) Out of one pair of ... any blending and both the characters recover as such in F2 generation. (d) Factors occur in pairs.

Last Answer : (c) Alleles do not show any blending and both the characters recover as such in F2 generation

A plant has two alleles for color. The red allele is recessive, and is represented by q. The purple allele is dominant, and is represented by p. If 30 of 100 organisms are red, what is q?

Description : A plant has two alleles for color. The red allele is recessive, and is represented by q. The purple allele is dominant, and is represented by p. If 30 of 100 organisms are red, what is q?

Last Answer : 0.55

A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by q. The blue allele is dominant, and is represented by p. If 20 of 100 organisms are green, what is q?

Description : A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by q. The blue allele is dominant, and is represented by p. If 20 of 100 organisms are green, what is q?

Last Answer : A. 0.45 Apex

A species of flu has two alleles for the length of their legs. The allele for long leg is dominant, and is represented by p. The allele for short legs is recessive, and is represented by q. If 33 of 100 organisms have short legs, what is p?

Description : A species of flu has two alleles for the length of their legs. The allele for long leg is dominant, and is represented by p. The allele for short legs is recessive, and is represented by q. If 33 of 100 organisms have short legs, what is p?

Last Answer : 0.043

A species of flu has two alleles for the length of their legs. The allele for long leg is dominant, and is represented by p. The allele for short legs is recessive, and is represented by q. If 33 of 100 organisms have short legs, what is p?

Description : A species of flu has two alleles for the length of their legs. The allele for long leg is dominant, and is represented by p. The allele for short legs is recessive, and is represented by q. If 33 of 100 organisms have short legs, what is p?

Last Answer : 0.043

The principle of dominance states that a. all alleles are dominant. b. all alleles are recessive. c. some alleles are dominant and others are recessive. d. alleles are neither dominant nor recessive.

Description : The principle of dominance states that a. all alleles are dominant. b. all alleles are recessive. c. some alleles are dominant and others are recessive. d. alleles are neither dominant nor recessive.

Last Answer : c. some alleles are dominant and others are recessive.

Select the correct match. (a) Haemophilia – Y linked (b) Phenylketonuria – Autosomal dominant trait(c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11 (d) Thalassemia – X linked

Description : Select the correct match. (a) Haemophilia – Y linked (b) Phenylketonuria – Autosomal dominant trait (c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11 (d) Thalassemia – X linked

Last Answer : (c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11

.A diseased man marries a normal woman. They get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is (a) sex linked dominant (b) sex linked recessive (c) sex limited character (d) autosomal dominant.

Description : .A diseased man marries a normal woman. They get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is (a) sex linked dominant (b) sex linked recessive (c) sex limited character (d) autosomal dominant.

Last Answer : (a) sex linked dominant

Which of the following most appropriately describes haemophilia? (a) Chromosomal disorder (b) Dominant gene disorder (c) Recessive gene disorder (d) X-linked recessive gene disorder

Description : Which of the following most appropriately describes haemophilia? (a) Chromosomal disorder (b) Dominant gene disorder (c) Recessive gene disorder (d) X-linked recessive gene disorder

Last Answer : (d) X-linked recessive gene disorder

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible? (a) Six (b) Three (c) Four (d) Five

Description : ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible? (a) Six (b) Three (c) Four (d) Five

Last Answer : (c) Four

What is expressed when neither copy of an allele completely masks expression of the other but instead of alleles is seen?

Description : What is expressed when neither copy of an allele completely masks expression of the other but instead of alleles is seen?

Last Answer : Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.

Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups. (a) The gene (I) has three alleles. (b) A person will have only two of the three alleles. (c) When IA and IB are present together, they express same type of sugar. (d) Allele i does not produce any sugar.

Description : Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups. (a) The gene (I) has three alleles. (b) A person will have only two of the three alleles. (c) When IA and IB are present together, they express same type of sugar. (d) Allele i does not produce any sugar.

Last Answer : (c) When IA and IB are present together, they express same type of sugar.

When one alleles of a gene masks the presence of the other allele what form is masked?

Description : When one alleles of a gene masks the presence of the other allele what form is masked?

Last Answer : The recessive allele.

What is the difference between a dominant and recessive allele?

Description : What is the difference between a dominant and recessive allele?

Last Answer : A: A dominant allele expresses its phenotype even if only one copy is present, while a recessive allele expresses its phenotype only if two copies are present.

What is the difference between a dominant and a recessive allele?

Description : What is the difference between a dominant and a recessive allele?

Last Answer : A: A dominant allele is one that is expressed in the phenotype of an organism even if only one copy is present, while a recessive allele is only expressed in the phenotype if two copies are present.

What is the difference between a recessive and a dominant allele?

Description : What is the difference between a recessive and a dominant allele?

Last Answer : A: A recessive allele is an allele that is only expressed when present in a homozygous state, while a dominant allele is an allele that is expressed even when present in a heterozygous state.

What is the difference between a dominant and a recessive allele?

Description : What is the difference between a dominant and a recessive allele?

Last Answer : A: A dominant allele is expressed in the phenotype when present, while a recessive allele is only expressed in the phenotype when two copies are present.

What is the difference between a dominant and recessive allele?

Description : What is the difference between a dominant and recessive allele?

Last Answer : A: A dominant allele is expressed in the phenotype even if it is present in only one copy, while a recessive allele is only expressed in the phenotype if it is present in two copies.

What is the difference between a dominant allele and a recessive allele?

Description : What is the difference between a dominant allele and a recessive allele?

Last Answer : A: A dominant allele is expressed when present in either the homozygous or heterozygous state, while a recessive allele is only expressed when present in the homozygous state.

What is the difference between a dominant allele and a recessive allele?

Description : What is the difference between a dominant allele and a recessive allele?

Last Answer : A: A dominant allele masks the expression of a recessive allele in a heterozygous individual.

Is it true that gregor mendel called an idividual that has one dominant allele and one recessive allelefor a trait a purebred?

Description : Is it true that gregor mendel called an idividual that has one dominant allele and one recessive allelefor a trait a purebred?

Last Answer : yes

When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because a. the allele for tall plants is recessive. b. the allele for short plants is dominant. c. the allele for tall plants is dominant. d. they were true-breeding like their parents.

Description : When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because a. the allele for tall plants is recessive. b. the allele for short plants is dominant. c. the allele for tall plants is dominant. d. they were true-breeding like their parents.

Last Answer : c. the allele for tall plants is dominant.

What is the difference between dominant and recessive alleles?

Description : What is the difference between dominant and recessive alleles?

Last Answer : Dominant alleles are expressed when present in either one or both copies, while recessive alleles are only expressed when present in both copies.

If one parent has two dominant alleles and another parent has two recessive alleles the offspring will have?

Description : If one parent has two dominant alleles and another parent has two recessive alleles the offspring will have?

Last Answer : PFHHHHH

Which of the following statements is not true of two genes that show 50% recombination frequency? (a) The gene show independent assortment. (b) If the genes are present on the same chromo- some, they undergo more than one cross-overs in every meiosis. (c) The genes may be on different chromosomes. (d) The genes are tightly linked.

Description : Which of the following statements is not true of two genes that show 50% recombination frequency? (a) The gene show independent assortment. (b) If the genes are present on the same chromo- some, they ... every meiosis. (c) The genes may be on different chromosomes. (d) The genes are tightly linked.

Last Answer : (b) If the genes are present on the same chromo- some, they undergo more than one cross-overs in every meiosis.

Crossing over in diploid organism is responsible for (a) segregation of alleles (b) recombination of linked alleles (c) dominance of genes (d) linkage between genes.

Description : Crossing over in diploid organism is responsible for (a) segregation of alleles (b) recombination of linked alleles (c) dominance of genes (d) linkage between genes.

Last Answer : b) recombination of linked alleles

When crossing a homozygous recessive with a heterozygote? -Biology

Description : When crossing a homozygous recessive with a heterozygote? -Biology

Last Answer : answer:

An allele is dominant if it is expressed in (a) both homozygous and heterozygous states (b) second generation (c) heterozygous combination (d) homozygous combination.

Description : An allele is dominant if it is expressed in (a) both homozygous and heterozygous states (b) second generation (c) heterozygous combination (d) homozygous combination.

Last Answer : (a) both homozygous and heterozygous states

RR (Red) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of (a) dominant-recessive (b) incomplete dominance (c) hybrid (d) supplementary genes.

Description : RR (Red) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of (a) dominant-recessive (b) incomplete dominance (c) hybrid (d) supplementary genes.

Last Answer : (b) incomplete dominance

5 Consider a cross in which a trait is inherited by incomplete dominance. What percentage of the F2 from the matng of homozygous dominant and homozygous recessive individuals will possess the dominant phenotype?

Description : 5 Consider a cross in which a trait is inherited by incomplete dominance. What percentage of the F2 from the matng of homozygous dominant and homozygous recessive individuals will possess the dominant phenotype? a) 0 per cent b) 25 per cent c) 50 per cent d) 75 per cent

Last Answer : ANS: b 25 per cent

What Dominant alleles are both fully expressed in a phenotype?

Description : What Dominant alleles are both fully expressed in a phenotype?

Last Answer : This is a type of heredity where two dominant alleles are bothfully expressed in a phenotype.

Is color blindness a trait controlled by a dominant allele on the x chromosome?

Description : Is color blindness a trait controlled by a dominant allele on the x chromosome?

Last Answer : Need answer

The phenomenon, in which an allele of one gene suppresses the activity of an allele of another gene, is known as (a) epistasis (b) dominance (c) suppression (d) inactivation

Description : The phenomenon, in which an allele of one gene suppresses the activity of an allele of another gene, is known as (a) epistasis (b) dominance (c) suppression (d) inactivation

Last Answer : (a) epistasis

Inheritance of primary gout is (A) Autosomal recessive (B) Autosomal dominant (C) X-linked recessive (D) X-linked dominant

Description : Inheritance of primary gout is (A) Autosomal recessive (B) Autosomal dominant (C) X-linked recessive (D) X-linked dominant

Last Answer : Answer : C

Haemophilia is more commonly seen in human males than in human females because (a) a greater proportion of girls die in infancy (b) this disease is due to a Y-linked recessive mutation (c) this disease is due to an X-linked recessive mutation (d) this disease is due to an X-linked dominant mutation.

Description : Haemophilia is more commonly seen in human males than in human females because (a) a greater proportion of girls die in infancy (b) this disease is due to a Y-linked recessive mutation (c) this ... to an X-linked recessive mutation (d) this disease is due to an X-linked dominant mutation.

Last Answer : this disease is due to an X-linked recessive mutation

A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters affected. Which of the following mode of inheritance do you suggest for this disease? (a) Sex-linked dominant (b) Sex-linked recessive (c) Sex-limited recessive (d) Autosomal dominant

Description : A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none ... ? (a) Sex-linked dominant (b) Sex-linked recessive (c) Sex-limited recessive (d) Autosomal dominant

Last Answer : (b) Sex-linked recessive

Which one is the incorrect statement with regard to the importance of pedigree analysis? (a) It confirms that DNA is the carrier of genetic information. (b) It helps to understand whether the trait in question is dominant or recessive. (c) It confirms that the trait is linked to one of the autosome. (d) It helps to trace the inheritance of a specific trait.

Description : Which one is the incorrect statement with regard to the importance of pedigree analysis? (a) It confirms that DNA is the carrier of genetic information. (b) It helps to understand whether the trait in ... linked to one of the autosome. (d) It helps to trace the inheritance of a specific trait.

Last Answer : (a) It confirms that DNA is the carrier of genetic information.

Select the incorrect statement with regard to haemophilia. (a) It is a dominant disease.(b) A single protein involved in the clotting of blood is affected. (c) It is a sex-linked disease. (d) It is a recessive disease.

Description : Select the incorrect statement with regard to haemophilia. (a) It is a dominant disease. (b) A single protein involved in the clotting of blood is affected. (c) It is a sex-linked disease. (d) It is a recessive disease.

Last Answer : (a) It is a dominant disease.

n the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree. (i) (ii) (iii) (iv) (a) Autosomal recessive (b) X-linked dominant (c) Autosomal dominant (d) X-linked recessive

Description : n the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree. (i) (ii) (iii) (iv) (a) Autosomal recessive (b) X-linked dominant (c) Autosomal dominant (d) X-linked recessive

Last Answer : (a) Autosomal recessive

Haemophilia is more common in males because it is a (a) recessive character carried by Y-chromosome (b) dominant character carried by Y-chromosome (c) dominant trait carried by X-chromosome (d) recessive trait carried by X-chromosome.

Description : Haemophilia is more common in males because it is a (a) recessive character carried by Y-chromosome (b) dominant character carried by Y-chromosome (c) dominant trait carried by X-chromosome (d) recessive trait carried by X-chromosome.

Last Answer : (d) recessive trait carried by X-chromosome

The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Last Answer : (b) genes for characters are located on the sex- chromosomes

In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates (a) the two genes are linked and present on the same chromosome (b) both of the characters are controlled by more than one gene (c) the two genes are located on two different chromosomes (d) chromosomes failed to separate during meiosis.

Description : In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates (a) the two genes are linked and present on the ... two genes are located on two different chromosomes (d) chromosomes failed to separate during meiosis.

Last Answer : (a) the two genes are linked and present on the same chromosome

Mr. Kapoor has Bb autosomal gene pair and d allele sex-linked. What shall be proportion of Bd in sperms? (a) Zero (b) 1/2 (c) 1/4 (d) 1/8

Description : Mr. Kapoor has Bb autosomal gene pair and d allele sex-linked. What shall be proportion of Bd in sperms? (a) Zero (b) 1/2 (c) 1/4 (d) 1/8

Last Answer : (c) 1/4

A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called (a) monohybrid cross (b) back cross (c) test cross (d) dihybrid cross.

Description : A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called (a) monohybrid cross (b) back cross (c) test cross (d) dihybrid cross.

Last Answer : (c) test cross