In addition to pea,Mendel had carried out hybridization experiments in another plant also,where he could not establish the findings he had previously obtained on pea plants.This plant was

1.  Bean

2.  Maize

3.  Antirrhinum

4.  Hieracium

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4
Correct Answer :

Hieracium


Explanation :
No Explanation available for this question

Mendel studied seven contrasting characters for his breeding experiments with Pisum sativum,which of the following characters he did not use

1.  Pod shape

2.  Leaf shape(or size)

3.  Plant height(or internode size)

4.  Pod colour

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4
Correct Answer :

Leaf shape(or size)


Explanation :
No Explanation available for this question

A hybrid black coated Guinea pig produces two million sperm cells.Approximately,what number of its sperm cells contain the recessive gene for white colour

1.  1.0 million

2.  2.0 million

3.  2.25 million

4.  3.5 million

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4
Correct Answer :

1.0 million


Explanation :
No Explanation available for this question

If dwarf pea plant was treated with gibberellic acid,it grew as tall plant.If this treated plant is crossed with a pure tall plant then the phenotypic ratio of F2 is likely to be

1.  All dwarf

2.  All tall

3.  50% tall,50% dwarf

4.   75% tall,255 dwarf

View Answer  
4
Correct Answer :

75\% tall,255 dwarf


Explanation :
No Explanation available for this question

A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

1.  Tolypothrix

2.  Chlorella

3.  Nostoc

4.  Anabaena

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4
Correct Answer :

Anabaena


Explanation :
No Explanation available for this question

In an experiment with homozygous pea plants,the round yellow seeded plants were crossed with the plants producing wrinkled green seeds.What will be the phenotypic ratio of the progeny

1.  All rounde yellow

2.  1 round yellow,1 round green,3 wrinkled green

3.  1 round yellow,1 round green,1  wrinkled yellow,1 wrinkled green

4.  Data are insufficient

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4
Correct Answer :

All rounde yellow


Explanation :
No Explanation available for this question

An embryo resulting from the mating of two albino rabbits is transplanted into the uterus of a brown rabbit.The phenotype of this transplant will most probably be

1.  All brown

2.  All white

3.  Brown with white spots

4.  White with brown spots

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4
Correct Answer :

All brown


Explanation :
No Explanation available for this question

A plant with AaBb composition,on self-pollination results in which of the following genotypic frequencies among the dominant phenotypes

1.  AABB-2,AABb-2,AaBB-2,AaBb-3

2.  AABB-21AABb-2,AaBB-2,AaBb-4

3.  AABB-1,AABb-2,AaBB-2,AaBb-1

4.  AABB-1,AABb-1,AaBB-1,AaBb-1

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4
Correct Answer :

AABB-21AABb-2,AaBB-2,AaBb-4


Explanation :
No Explanation available for this question

Three yellow round pea seeds labeled A,B,C were taken and grown into plants.The plants were crossed to a plant grown from a green wrinkled pea.100 seds issuing from each cross were sorted into phenotypic classes as follows I.A:100 yellow round II.B:51 yellow round,49 green round III.C:24 yellow round,26 yellow wrinkled,25 green round IV.Green wrinkled The genotype of plant C would be

1.  YYRR

2.  YyRr

3.  YyRR

4.  YYRr

View Answer  
4
Correct Answer :

YyRr


Explanation :
No Explanation available for this question

In microbial genetics, which one is referred to as Griffith effect

1.  Conjugation

2.  Transduction

3.  Transformation

4.  Sexduction

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4
Correct Answer :

Transformation


Explanation :
No Explanation available for this question
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