If the P or parental generation was pure strain with green peas crossed with a pure stran with yellow peas,and their offspring(the F1 generation) were self-pollinated,then F2 generation would be

1.  All plants with green peas

2.  All plants with yellow peas

3.  Half plants with green peas and half plants with yellow peas

4.  3/4 plants with yellow peas and ¼ plants with green peas

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4
Correct Answer :

3/4 plants with yellow peas and ¼ plants with green peas


Explanation :
No Explanation available for this question

An organism with two copies of the same alleles is

1.  Homozygous for that trait

2.  Homologous for the allele

3.  Heterozygous for that trait

4.  Heterologous for the allele

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4
Correct Answer :

Homozygous for that trait


Explanation :
No Explanation available for this question

An organism with two different alleles is

1.  Homozygous for that trait

2.  Homologous for the allele

3.  Heterozygous for that trait

4.  Heterologous for the allele

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4
Correct Answer :

Heterozygous for that trait


Explanation :
No Explanation available for this question

A woman without dimples match with a man who has dimples and who is known to be heterozygous for the trait.What is the chance of their first child will have dimples

1.  One in four

2.  One in two

3.  Three out of four

4.  It is certain

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4
Correct Answer :

One in two


Explanation :
No Explanation available for this question

If the first child of the couple described in Q.No.102 had dimples,then what is the chance that their second child will have dimples

1.  No chance

2.  One in four

3.  One in two

4.  Three out of four

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4
Correct Answer :

One in two


Explanation :
No Explanation available for this question

A test cross is done to find out

1.  The genotype of an individual by examining the phenotypes of its offspring from a particular mating

2.  The genotype of an individual by testing for its DNA content(electrophoresis)

3.  Whether a mating is fertile

4.  Whether two species can interbreed

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4
Correct Answer :

The genotype of an individual by examining the phenotypes of its offspring from a particular mating


Explanation :
No Explanation available for this question

In Mendel’s crosses beginning with two pure strains of pea plants,one with yellow peas(Y/Y)and the other with green peas(y/y),the test cross was done between F2 offspring with yellow peas and a pure strain of plants with the genotype

1.  Y/Y

2.  y/y

3.  Y/y

4.  YG

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4
Correct Answer :

y/y


Explanation :
No Explanation available for this question

A test cross distinguishes between

1.  Two homozygous forms

2.  A homozygous dominant and a heterozygous form

3.  Two heterozygous forms

4.  A homozygous recessive and a heterozygous form

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4
Correct Answer :

A homozygous dominant and a heterozygous form


Explanation :
No Explanation available for this question

The allele for black hair colour(B) is dominant over the allele for white hair colour(b) in a Guinea pigs.A test cross between a black male and a white female produced a litter of five black and one white Guinea pigs.The genotype of the father is

1.  Unknown,due to small sample size

2.  B/B

3.  B/b

4.  b/b

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4
Correct Answer :

B/b


Explanation :
No Explanation available for this question

The allele for black hair colour(B) is dominant over the allele for white hair colour(b) in guinea pigs.A test cross between a black female and a white male produced a litter of six black Guinea pigs.The genotype of the mother is

1.  Unknown,due to small sample size

2.  B/B

3.  B/b

4.  b/b

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4
Correct Answer :

Unknown,due to small sample size


Explanation :
No Explanation available for this question
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