The organism chosen by mendel to explain the laws of inheritance was

1.  Drosophila melanogaster

2.  Antirrhinum majus

3.  Pisum  sativum

4.  Homo sapiens

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4
Correct Answer :

Pisum  sativum


Explanation :
No Explanation available for this question

When different alleles of the same gene are present in an individual, the individual is a

1.  Heterozygous

2.  Diplois

3.  Homozygous

4.  Mosaic

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4
Correct Answer :

Heterozygous


Explanation :
No Explanation available for this question

A common test to find the genotype of a hybrid is by

1.  Crossing of one F2 progeny with dominant parent

2.  Studying the sexual behavior of F1 progenies

3.  Crossing of one F1 progeny with recessive parent

4.  Crossing of one F2 progeny with recessive parent

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4
Correct Answer :

Crossing of one F1 progeny with recessive parent


Explanation :
No Explanation available for this question

Inheritance of skin colour in human is an example of

1.  Codominance

2.  Point mutuation

3.  Chromosomal aberration

4.  Polygenic inheritance

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4
Correct Answer :

Polygenic inheritance


Explanation :
No Explanation available for this question

In pea plants yellow seeds are dominant to green .If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow anki green seeded plants would you expect in F1 generation

1.  9:1

2.  1:3

3.  3:1

4.  50:50

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4
Correct Answer :

50:50


Explanation :
No Explanation available for this question

A human male produces sperms with the genotypes AB,Ab,aB and ab pertaining to ntwo diallelic character in equal proportions.What is the corresponding genotype of this person

1.  AaBB

2.  AABb

3.  AABB

4.  AaBb

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4
Correct Answer :

AaBb


Explanation :
No Explanation available for this question

Two genes R and Y are located very close on the chromosomal linkage map of maize plant .When RRYY and rryy genotypes are hybridized ,the F2 segregation will show

1.  Segregation in the expected 9:3:3:1 ratio

2.  Segregation in 3:1 ratio

3.  Igher number of parental types

4.  Higher number of recombinant types

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4
Correct Answer :

Igher number of parental types


Explanation :
No Explanation available for this question

A pure tall and a pure dwarf plant were crossed and produced offspring .Offspring were self crossed.Then findout the ratio between true breeding tall to true breeding dwarf

1.  1:1

2.  3:1

3.  2:1

4.  1:2:1

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4
Correct Answer :

1:1


Explanation :
No Explanation available for this question

Genetics trm was proposed by

1.  Mende

2.  Bateson

3.  Morgan

4.  Johansen

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4
Correct Answer :

Bateson


Explanation :
No Explanation available for this question

Which of these is a dominant factor

1.  Rh factor

2.  Albinism

3.  Colour blind ness

4.  Haemophilia

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4
Correct Answer :

Rh factor


Explanation :
No Explanation available for this question
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