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 and green seeded plants would you expect in F1 generation

1.  9:1

2.  1:3

3.  3:1

4.  50:50

View Answer  
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 two diallelic characters in equal proportions. What is the corresponding genotype of this person

1.  Aa BB

2.  AA BB

3.  Aa Bb

View Answer  
3
Correct Answer :

Aa Bb


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.  Higher number of parental types

4.  Higher number of recombinant types

View Answer  
4
Correct Answer :

Higher 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 find out the ratio between true breeding tall to true breeding dwarf

1.  1:1

2.  3:1

3.  2:1

4.  1:2:1

View Answer  
4
Correct Answer :

1:1


Explanation :
No Explanation available for this question

genetics term was proposed by

1.  Mendel

2.  Bateson

3.  Morgan

4.  Johannsen

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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 blindness

4.  Haemophilia

View Answer  
4
Correct Answer :

Rh factor


Explanation :
No Explanation available for this question

gene for colour blindness is located on

1.  X- chromosome

2.  Y-chromosome

3.  13th chromosome

4.  21st chromosome

View Answer  
4
Correct Answer :

X- chromosome


Explanation :
No Explanation available for this question

X-linked recessive gene is

1.  Always expressed in males

2.  Always expressed in females

3.  Lethal

4.   Sub-lethal

View Answer  
4
Correct Answer :

Always expressed in males


Explanation :
No Explanation available for this question

haemophilia is due to absence of

1.  Factor-IX

2.  Factor-VIII

3.  Factor-VI

4.  Factor-VII

View Answer  
4
Correct Answer :

Factor-VIII


Explanation :
No Explanation available for this question

cross between unrelated group of organisms is called

1.  Hybrid

2.  Test cross

3.  Heterosis

4.  Back cross

View Answer  
4
Correct Answer :

Hybrid


Explanation :
No Explanation available for this question
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