In a pedigree analysis represents

1.  Unrelated mating

2.  Consanguinous mating

3.  Affected parents

4.  Siblings

5.  Non-identical twins

View Answer  
5
Correct Answer :

Consanguinous mating


Explanation :
No Explanation available for this question

Indicate, the inheritance of which of the following is controlled by multiple alleles:

1.  Colour blindness

2.  Sickle cell anaemia

3.  Blood group

4.  Phenylketoneufla

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4
Correct Answer :

Blood group


Explanation :
No Explanation available for this question

Which of the following is related to haemophilia

1.  A recessive gene responsible present in the X chromosome

2.  A dominant gene responsible present in the autosomal chromosome

3.  A responsible dominant gene present in the Y chromosome

4.  A responsible domiant gene present in the autosomal chromosome

View Answer  
4
Correct Answer :

A recessive gene responsible present in the X chromosome


Explanation :
No Explanation available for this question

F2 generation in a Mendenan cross showed that both genotypic and phenotypic ratio are the same as 1: 2: 1. It represents a case of:

1.  Dihybrid cross

2.  Monohybrid cross with complete dominance

3.  Monohybrid cross with incomplete dominance

4.  Co-dominance

View Answer  
4
Correct Answer :

Monohybrid cross with incomplete dominance


Explanation :
No Explanation available for this question

A normal visioned man whose father was colour-blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind

1.  zero per cent

2.  25%

3.  50%

4.  100%

View Answer  
4
Correct Answer :

zero per cent


Explanation :
No Explanation available for this question

A man having the genotype EEFfGgHH can produce P number of genetically different sperms, arid a woman of genotype liLLMmNn can generate Q number of genetically different eggs. Detennine the values of P and Q.

1.  P=4,Q=4

2.  P=4,Q=8

3.  P=8,Q=4

4.  P=8,Q=8.

View Answer  
4
Correct Answer :

P=4,Q=8


Explanation :
No Explanation available for this question

In an organism, tall phenotype is dominant over recessive dwarf phenotype, and the alleles are designated as T and t, respectively. Upon crossing two different individuals, total 250 offsprings were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were

1.  TT x TT

2.  TT x tt

3.  Tt x Tt

4.  Tt x tt

View Answer  
4
Correct Answer :

Tt x tt


Explanation :
No Explanation available for this question

When yellow round heterozygous pea plants are self fertilized, the frequency of occurrence of RrYY genotype among the offsprings is

1.  9/16

2.  3/16

3.  2/16

4.  1/16

View Answer  
4
Correct Answer :

2/16


Explanation :
No Explanation available for this question

If two persons with ‘AB’ blood group marry and have sufficiently large number of children, these children could be classified as "A' blood group: ‘AB’ blood group: ‘B’ blood group in 1:_2:1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and ‘B’ type proteins in ‘AB’ blood group individuals. This is an example of:

1.  Incomplete dominance

2.  Partial dominance

3.  Complete dominance

4.  Codominance

View Answer  
4
Correct Answer :

Codominance


Explanation :
No Explanation available for this question

The incorrect statement with regard to Haemophilia is:

1.  It is a recessive disease

2.  It is a dominant disease

3.  A single protein involved in the clotting of blood is affected

4.  It is a sex-linked disease

View Answer  
4
Correct Answer :

It is a dominant disease


Explanation :
No Explanation available for this question
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