Question # 1

Which phenomenon reduces the chances of genetic recombination and variations among offspring ?

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linkage

crossing over

independent assortment

dominance

There are ________ total possible genotypes of blood group ABO system

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3

4

6

7

Diabetes is the leading cause of

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Kidney failure

Adult blindness

Heart disease

All of these

What is the probability of having albino child if father and mother both are carrier(Aa)

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25%

30%

50%

75%

Anti-Rh antibodies appear in plasma

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During first few months

During last months

Only when stimulated

If Rh⁺individual mistakenly receives Rh^-blood

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these

What will be the risk of heamophilia in sons if father is haemophilic and mother is normal

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0%

20%

25%

50%

Which of the following traist is transmitted directly from an affected to only its sons?

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autosomal

X-linked

Y-linked

X and Y linked

Pseudo-autosomal genes are present on

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X-chromosome

Y-chromosome

Both a & b

Autosomes

What are chances for having Rh-ve baby if one parent is Rh+ve and (homozygous) and other is Rh-ve

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25%

50%

100%

0%

If the distance of 20 map units is found among two linked loci what would be the percentage of cross gametes

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40%

60%

20%

10%

Which enzyme deficiency leads to phenylketonuria

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Phenylalanine oxidase

Phenylalanine hydroxylase

Phenylalanine synthase

Phenylalanine carboxylase

A carrier mother for colour blindness does not have

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A normal boy

A carrier boy

A colour blind boy

A normal daughter

Mutatuons are inherited only if they occur in the

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Gland cells

Gametes

Muscle cells

Somatic cells

Which of the following traits is not sex-linked recessive ?

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haemophilia

colour blindness

hypophosphatemic ricket

tfm syndrome

Genes for alpha and beta chains of hemoglobin are found on which chromosomes?

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Chromosome 16 alpha; chromosome 11 beta

Chromosome 11 alpha; chromosome 16 beta

Chromosome 11

Chromosome 16

In sickle cell beta chain glutamic acid is replaced by valine which is sixth amino acid from

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N-Terminal

C-Terminal

R-Terminal

H-Terminal

Interaction of two loci

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Pleiotropy

Epistasis

Dominance

Differentiation

Mutation of one or two N-bases is

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Inversion

Point mutation

Deletion

Chromosomal aberrations

The chances of which hemophilia is equal in males & females

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A

B

C

All

Queen victoria was having which kind of haemophilia

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A

B

C

None

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