Description : A male human is heterozygous for autosomal genes A and B and is also hemizygous for haemophilic gene h. What proportion of his sperms will be abh? (a) 1/8 (b) 1/32 (c) 1/16 (d) 1/4
Last Answer : (a) 1/8
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
Description : Pick out the correct statements. (1) Haemophilia is a sex-linked recessive disease. (2) Down's syndrome is due to aneuploidy. (3) Phenylketonuria is an autosomal recessive gene disorder. (4) Sickle cell anaemia is an X- ... are correct. (c) (1) and (4) are correct. (d) (2) and (4) are correct.
Last Answer : (b) (1), (2) and (3) are correct.
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.
Description : The genes, which remain confined to differential region of ‘Y’ chromosome, are: (a) Autosomal genes (b) Holandric genes (c) Sex linked genes (d) Mutant genes
Last Answer : Ans. ((b))
Description : The genes, which remain confined to differential region of Y-chromosome, are (a) autosomal genes (b) holandric genes (c) completely sex-linked genes (d) mutant genes.
Last Answer : b) holandric genes
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
Description : Study the pedigree chart given below. What does it show? (a) Inheritance of a condition like phenylketonuria as an autosomal recessive trait. (b) The pedigree chart is wrong as this is ... disease like haemophilia. (d) Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
Last Answer : (a) Inheritance of a condition like phenylketonuria as an autosomal recessive trait.
Description : . Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.
Last Answer : (b) caused by a change in a single base pair of DNA
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
Description : 8. If worker A earns more in wages than worker B, it could be because: a. The product made by worker A sells for a higher price than that made worker B b. Worker A uses more capital per worker than worker B c. Worker A has more natural ability than worker B d. All of the above
Last Answer : d. All of the above
Description : A fruit fly is heterozygous for sex-linked genes, when mated with normal female fruit fly, the males specific chromosome will enter egg cell in the proportion (a) 3 : 1 (b) 7 : 1 (c) 1 : 1 (d) 2 : 1.
Last Answer : (c) 1 : 1
Description : What is sex linked gene ?
Last Answer : The sex linked gene is the gene located on the sex chromosome. There are more than 50 sex-linked genes in human sex chromosomes.
Description : $ Haemophilia is a sex linked disease ! Haemophilia is due to a recessive gene.
Last Answer : $ Haemophilia is a sex linked disease ! Haemophilia is due to a recessive gene. A. If both As and R are ... R is wrong D. If both As and R are wrong.
Description : 7) Select the pair of hereditary disorders that are sex linked a)thalassemia and phenylketonuria b phenylketonuria and sicklecell anaemia c) sicklecell anaemia and colour blindness d) colour blindness and haemophilia
Last Answer : 7.d colour blindness and haemophilia
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
Description : Inheritance of primary gout is (A) Autosomal recessive (B) Autosomal dominant (C) X-linked recessive (D) X-linked dominant
Last Answer : Answer : C
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
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
Description : If a person has one copy of each of two different alleles (ie Bb) for a given gene the person is for that trait.?
Last Answer : Need answer
Description : In autosomal recessive inheritance: a. the rarer the trait the higher the possibility of marriages within the same family b. most recessive gene defects cause problem through failure to produce functional protein c. both males and females are affected equally severely d. all above
Last Answer : all above
Description : By which the sex of a child is determined before birth? (1) Sperms of father (2) Foetus of mother (3) Both (1) and (2) (4) Nutrition of mother
Last Answer : (2) Foetus of mother Explanation: The gender of the baby can be ascertained accurately after more or less than seven weeks of pregnancy. During this period of pregnancy, the fetal DNA is ... in the mother's blood. Thus, identifying the fetus gender through prenatal gender testing is easier.
Description : An abnormal human baby with ‘XXX’ sex chromosomes was born due to (a) fusion of two ova and one sperm (b) fusion of two sperms and one ovum (c) formation of abnormal sperms in the father (d) formation of abnormal ova in the mother.
Last Answer : (d) formation of abnormal ova in the mother.
Description : . Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.
Last Answer : (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.
Description : By which the sex of a child is determined before birth ? (1) Sperms of father (2) Foetus of mother (3) Both (1) and (2) (4) Nutrition of mother
Last Answer : Foetus of mother
Description : What is the difference between a gene and an allele?
Last Answer : A: A gene is a section of DNA that codes for a specific trait, while an allele is a specific version of a gene.
Last Answer : A: A gene is a segment of DNA that contains the instructions for producing a specific protein or RNA molecule, while an allele is a variant form of a gene that can give rise to different traits.
Last Answer : A: A gene is a section of DNA that contains the instructions for building a specific protein or RNA molecule, while an allele is a specific version of a gene that can differ in sequence and lead to different variations of a trait.
Description : What is the difference between an allele and a gene?
Last Answer : A: A gene is a unit of hereditary information that determines a particular trait or characteristic, while an allele is a specific version of a gene that can differ in sequence from other alleles of the same gene and can result in different expressions of the trait.
Last Answer : A: A gene is a sequence of DNA that codes for a specific trait, while an allele is one of two or more forms of a gene that may exist at a particular locus on a chromosome.
Last Answer : A: A gene is a sequence of DNA that codes for a particular protein, while an allele is a variant form of a gene that produces a slightly different version of the protein.
Last Answer : A: A gene is a segment of DNA that codes for a specific protein or RNA molecule, while an allele is a specific variant of a gene.
Last Answer : A: A gene is a specific sequence of DNA that codes for a particular trait, while an allele is a variant form of a gene.
Description : What is an allele of a gene? -Biology
Last Answer : answer:
Description : with suitable example tell me what is the difference between gene and allele -Biology
Description : When one alleles of a gene masks the presence of the other allele what form is masked?
Last Answer : The recessive allele.
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)
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
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
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.
Description : What are large randomly repeating non-coding DNA stretches called as? a. Satellite DNA b. Micro arrays c. Gene d. Allele
Last Answer : a. Satellite DNA
Description : Gametes have a. homologous chromosomes. b. twice the number of chromosomes found in body cells. c. two sets of chromosomes. d. one allele for each gene.
Last Answer : d. one allele for each gene.
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.
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
Description : A pair of contrasting characters controlling the same trait is called - (1) factors (2) loci (3) allele (4) lineage
Last Answer : (3) allele Explanation: An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or ... individual is called a homozygote; when the two alleles are different, the individual is a heterozygote.
Description : A pair of contrasting characters controlling the same trait is called (1) factors (2) loci (3) allele (4) lineage
Last Answer : allele
Description : Mark the correct option a) Non-attendance in obedience to an order from public servant shall be punished with simple imprisonment for a term which may extend to one month, or with fine which may extend to five hundred ... to 3 year or with fine or both c) Both the A and B d) Neither A nor B
Last Answer : c) Both the A and B
Description : Maximum area of compression reinforcement shall not exceed [ A ] 0.02 bd [ B ] 0.02 bD [ C ] 0.04 bd [ D ] 0.04 bD
Last Answer : [ C ] 0.04 bd
Description : Maximum area of tension reinforcement shall not exceed [ A ] 0.02 bd [ B ] 0.02 bD [ C ] 0.04 bd [ D ] 0.04 bD
Last Answer : [ D ] 0.04 bD