Pedigree analysis is not utilized to trace
Specific trait
Sex ratio
Disease
Abnormality
Which of the following symbols represent consanguineous mating?
In the given pedigree chart select the correct statement:
A & B are twins
A is younger than B
B is younger than A
Can’t determine the age of A & B
Which of the following is the sex linked disease?
Sickle cell anaemia
Haemophilia
Cystic fibrosis
Phenylketonuria
Mendelian disorders are caused by
Mutation in the single chromosome
Mutation in the single gene
Polyploidy
Aneuploidy
Which of the following disorder can’t be transmitted from a single diseased parent?
Colour Blindness
Myotonic dystrophy
Which of the following genotypes could cause Sickle cell anaemia?
Hbˢ + Hbᴬ
Hbᴬ+ Hbᴬ
Hbˢ + Hbˢ
Both ‘A’ and ‘C’.
Sickle cell anaemia is caused by
Substitution of valine by glutamic acid at 6th position in the polypeptide.
Substitution of valine by glycine at 4th position in the polypeptide.
Substitution of glutamic acid by valine at 4th position in the polypeptide.
Substitution of glutamic acid by valine at 6th position in the polypeptide.
Elongated sickle like structure of RBC is produced by
Platelets deposition on the outer surface of RBC
Reduced surface tension
Polymerisation of mutant haemoglobin under high oxygen tension.
Polymerisation of mutant haemoglobin under low oxygen tension.
Sickle cell anaemic person will have
Abnormal beta globin chain and sickle shaped RBC
Normal beta globin chain and sickle shaped RBC
Abnormal beta globin chain and biconcave RBC
Normal beta globin chain and biconcave RBC
Mental retardation is associated with
Klinefelter’s syndrome
Study the pedigree chart given below to identify the disorder
What does the given pedigree chart shows?
Sex-linked recessive trait
Sex-linked dominant trait
Inheritance of Sickle cell anaemia
Inheritance of autosomal dominant trait
Which of the following statements are correct with respect to aneuploidy?
(i) Aneuploidy is caused due to failure of segregation of chromatids
(ii) Aneuploidy is caused by due to failure of segregation of alleles
(iii) Aneuploidy results into loss or gain of chromosomes.
(iv) Aneuploidy always results into gain of chromosomes.
(v). Down’s syndrome is caused due to aneuploidy in chromosome 21.
(i), (iv) and (v)
(ii), (iii) and (v)
(i), (ii) and (iv)
(i), (iii) and (v)
Which of the following statements are correct?
(i) Polyploidy is caused due to failure of cytokinesis after telophase.
(ii) polyploidy results into increase in number of autosomes
(iii) Turner’s syndrome is an example of polyploidy
(iv) polyploidy results into an increase in a whole set of chromosomes
(i) and (ii)
(i) and (iii)
(ii) and (iii)
(i) and (iv)
Sex determination in Honey bee depends upon-
Number of sets of chromosomes present in parents
Number of sets of chromosomes present in progenies
Number of sets of genes present in parents
Number of sets of genes present in progenies
What is wrong with respect to sex determination in honey bee?
Unfertilized egg develops as a male by means of parthenogenesis.
Union of sperm and egg develops as a female
All workers and males will have 16 chromosomes while queen will have 32 chromosomes.
Males produce sperms by mitosis.
What is the special characteristic feature of haplodiploid sex determination?
Males produce sperms by mitosis
Number of sets of chromosomes present in progenies will decide their sex
Workers will have diploid set of chromosomes.
Drones will have haploid set of chromosome.
Colour Blindness is ------- due to defect in either----- or---- ------ of eye.
In case of Pea plant, grey seed colour (G) is dominant to white (g). If the progenies are formed in the following phenotypic ratio, find the genotypes of parents.
Grey was crossed with white, 49 grey and 54 white were formed. The genotype of the grey parent will be
Gg
GG
gg
gG
Grey was crossed with white, 82 grey and 0 white were formed. The genotype of the grey parent will be
Grey was crossed with white. 5 grey and 0 white were formed. The genotype of the grey parent will be
What is the number of different kind of gametes formed by the genotype- AaBbCcDdEE?
If two parents with AaBBccdd and aaBbccdd were crossed. What is the probability of getting following genotypes:
AaBbccdd
AABbccdd
AaBBccddd , aaBbccdd , AaBbccdd and aaBBccdd
If two parents with AaBBccdd and aaBbccdd were crossed. What is the ratio of the genotype of F1 generation:
If the offspring is aa, what possible combination of parental genotype would have produced these progenies?
AA and aa
Aa and AA
aa and AA
Aa and Aa
In corn plant, the allele for tall plant (T) is dominant to small plant (t) and coloured seed (C) is dominant to (c). In a particular cross, the probability of offspring being tall is ½ and being coloured is ¾, which of the following will produce such progeny?
In humans, Albinism (c) is recessive to normal condition (C). If two heterozygous parents have a progeny. What is the probability that it will be albino.
If a normal child is born to normal parents who are heterozygous for albinism. What is the probability of normal child being heterozygote?
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