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

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

1 Answer

Answer :

(a) both homozygous and heterozygous states
by

Related questions

A gene is said to be dominant if (a) it expresses its effect only in homozygous state (b) it expresses its effect only in heterozygous condition (c) it expresses its effect both in homozygous and heterozygous condition (d) it never expresses its effect in any condition.

Description : A gene is said to be dominant if (a) it expresses its effect only in homozygous state (b) it expresses its effect only in heterozygous condition (c) it expresses its effect both in homozygous and heterozygous condition (d) it never expresses its effect in any condition.

Last Answer : (c) it expresses its effect both in homozygous and

If a homozygous dominant parent and a heterozygous parent are crossed what percentage of the offspring are expected to be homozygous recessive?

Description : If a homozygous dominant parent and a heterozygous parent are crossed what percentage of the offspring are expected to be homozygous recessive?

Last Answer : Rr

For peas, round seed shape (R) is dominant to wrinkled seed shape (r). A homozygous dominant plant is crossed with a heterozygous plant. What are the expected ratios for genotype and phenotype of the offspring?

Description : For peas, round seed shape (R) is dominant to wrinkled seed shape (r). A homozygous dominant plant is crossed with a heterozygous plant. What are the expected ratios for genotype and phenotype of the offspring?

Last Answer : rr, Rr

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not have had a normal daughter for this character. (c) The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Description : Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not ... The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Last Answer : (a) The female parent is heterozygous.

An organism with two identical alleles is (a) dominant (b) hybrid (c) heterozygous (d) homozygous.

Description : An organism with two identical alleles is (a) dominant (b) hybrid (c) heterozygous (d) homozygous.

Last Answer : (d) homozygous.

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.

Description : 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.

Last Answer : (b) both alleles independently expressed in the heterozygote

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F1 generation? (a) 9 : 1 (b) 1 : 3 (c) 3 : 1 (d) 50 : 50

Description : In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F1 generation? (a) 9 : 1 (b) 1 : 3 (c) 3 : 1 (d) 50 : 50

Last Answer : (d) 50 : 50

.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)

Difference between homozygous and heterozygous. -Biology

Description : Difference between homozygous and heterozygous. -Biology

Last Answer : answer:

Is DD heterozygous or homozygous?

Description : Is DD heterozygous or homozygous?

Last Answer : homozygous

How you can determine whether or not the black parent is homozygous or heterozygous for the condition?

Description : How you can determine whether or not the black parent is homozygous or heterozygous for the condition?

Last Answer : You are not giving enough information to solve this. But, in practice, further crosses will give some clue if the same results occur. If that happens, then the parent in homozygous dominant.

A cross between homozygous recessive and heterozygous plant is - (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Description : A cross between homozygous recessive and heterozygous plant is - (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Last Answer : (2) Test cross Explanation: A cross between homozygous recessive and heterozygous plant is called Test Cross

The quickest way to produce homozygous breeding lines from heterozygous parents is through: (a) Half-seed technique (b) doubled haploids (c) Introgression (d) Aneuploidy

Description : The quickest way to produce homozygous breeding lines from heterozygous parents is through: (a) Half-seed technique (b) doubled haploids (c) Introgression (d) Aneuploidy

Last Answer : (b) doubled haploids

If a pea plant that is heterozygous for round, yellow peas (RrYy) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (RRYy), how many different phenotypes are their offspring expected to show? a. 2 b. 4 c. 8 d. 16

Description : If a pea plant that is heterozygous for round, yellow peas (RrYy) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (RRYy), how many different phenotypes are their offspring expected to show? a. 2 b. 4 c. 8 d. 16

Last Answer : a. 2

Explain homozygous and heterozygous parents.

Description : Explain homozygous and heterozygous parents.

Last Answer : Ans: Individuals with similar genes for a character such as TT or tt for length of stem are described as homozygous and the individuals with dissimilar genes for the character such as Tt for length of stem are described as Heterozygous.  

A cross between homozygous recessive and heterozygous plant is (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Description : A cross between homozygous recessive and heterozygous plant is (1) Back cross (2) Test cross (3) Monohybrid cross (4) Dihybrid cross

Last Answer : Test cross

A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy (a) may be colour blind or may be of normal vision (b) must be colour blind (c) must have normal colour vision (d) will be partially colour blind since he is heterozygous for the colour blind mutant allele

Description : A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy (a) may be colour blind or ... colour vision (d) will be partially colour blind since he is heterozygous for the colour blind mutant allele

Last Answer : (a) may be colour blind or may be of normal vision

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

If yellow flower color is dominant to blue flower color what will plant that is heterozygous be?

Description : If yellow flower color is dominant to blue flower color what will plant that is heterozygous be?

Last Answer : What is the answer ?

In fruit flies long wings are dominant to short wings. Cross a heterozygous long winged fruit fly with another heterozygous long winged fruit fly. what are the expected genotype and phenotype ratios?

Description : In fruit flies long wings are dominant to short wings. Cross a heterozygous long winged fruit fly with another heterozygous long winged fruit fly. what are the expected genotype and phenotype ratios?

Last Answer : Need answer

4. Crossing a Dominant character with (Homozygous & Hetrozygous) with a recessive trait to know the genome is called;- a) Back cross b) Monohybrid Cross C) Test Cross d)Dihybrid Cross

Description : 4. Crossing a Dominant character with (Homozygous & Hetrozygous) with a recessive trait to know the genome is called;- a) Back cross b) Monohybrid Cross C) Test Cross d)Dihybrid Cross

Last Answer : C) Test Cross

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 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.

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

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

In sheep the allele for white wall parentheses A is dominant over the allele for black wall parentheses a how do you determine the genotype of a white ram or male sheep?

Description : In sheep the allele for white wall parentheses A is dominant over the allele for black wall parentheses a how do you determine the genotype of a white ram or male sheep?

Last Answer : Need answer

What allele whose trait only shows up when no dominant allele is present?

Description : What allele whose trait only shows up when no dominant allele is present?

Last Answer : recessive alle

In fruit flies the allele for red eyes R is dominant which genotype represents a white-eyed male fruit fly?

Description : In fruit flies the allele for red eyes R is dominant which genotype represents a white-eyed male fruit fly?

Last Answer : X"Y . I hate novanet .

In fruit flies the allele for red eyes r is dominant which genotype represents a white eyed male fruit fly?

Description : In fruit flies the allele for red eyes r is dominant which genotype represents a white eyed male fruit fly?

Last Answer : X"Y . I hate novanet .

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

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

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.

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 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.

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.

According to Hardy-Weinberg principle, allele and genotype frequencies in a population will remain constant from generation to generation in the absen

Description : According to Hardy-Weinberg principle, allele and genotype frequencies in a population will remain constant from generation to generation in the absen

Last Answer : According to Hardy-Weinberg principle, allele and genotype frequencies in a population will remain constant from ... iv and v D. i, ii and iii

Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive are expressed in haploids (c) haploids are reproductively more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Description : Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive ... more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Last Answer : (b) all mutations, whether dominant or recessive are expressed in haploids

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

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.

The combination of three (three) fruits: What will be expressed in one word ?

Description : The combination of three (three) fruits: What will be expressed in one word ?

Last Answer : : A combination of three fruits: Trifala.

A pleiotropic gene (a) controls a trait only in combination with another gene (b) controls multiple traits in an individual (c) is expressed only in primitive plants (d) is a gene evolved during Pliocene.

Description : A pleiotropic gene (a) controls a trait only in combination with another gene (b) controls multiple traits in an individual (c) is expressed only in primitive plants (d) is a gene evolved during Pliocene.

Last Answer : (a) controls a trait only in combination with another gene

f we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F2 generation, then we obtain pea plants of F2 generation. (a) What do the plants of F2 generation look like? (b) State the ratio of tall plants to dwarf plants in F2 generation. (c) State the type of plants not found in F2 generation but appeared in F2 generation, mentioning the reason for the same. -Biology

Description : f we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F2 generation, ... plants not found in F2 generation but appeared in F2 generation, mentioning the reason for the same. -Biology

Last Answer : Answer. (a) All plants of F1 generation will be tall plants. (b) 3:1 (c) Dwarf trait is recessive trait which was not expressed in the F1 generation, the recessive trait gets expressed in the F2 generation after self pollination.