Question No:1

What type of gametes will form by genotype RrYy

[A] RY, Ry, rY, ry
[B] RY, Ry, ry, ry
[C] Ry, Ry,Yy, ry
[D] Rr, RR,Yy,YY



Question No:2

Which genotype characterises an organism that is heterozygous for two genes

[A] RRYy
[B] RrYY
[C] RRYY
[D] RrYy



Question No:3

The dwarfness in plants of F₂ generation is

[A] Recessive
[B] Dominant
[C] Both of the above
[D] None of the above



Question No:4

When heterozygous tall plants are self-pollinated, then tall and dwarf plants are obtained. This explains

[A] Law of purity of gamete
[B] Segregation of law
[C] Division in spores
[D] Independent assortment



Question No:5

Mendel’s principle of segregation was based on the separation of alleles in the garden pea during

[A] Pollination
[B] Embryonic development
[C] Seed formation
[D] Gamete formation



Question No:6

Which of the following is dominant character according to Mendel?

[A] Dwarf plant and yellow fruit
[B] Terminal fruit and wrinkled seed
[C] White testa and yellow pericarp
[D] Green coloured pod and rounded seed



Question No:7

In Mendelism, linkage was not observed due to

[A] Mutation
[B] Independent assortment
[C] Synapsis
[D] Crossing over



Question No:8

Mendel’s law of heredity can be explained with the help of

[A] Mitosis
[B] Meiosis
[C] Both mitosis and meiosis
[D] None of the above



Question No:9

A cross between plants having RRYY and rryy composition will yield plants with

[A] Round and yellow seeds
[B] Round and green seeds
[C] Wrinkled and yellow seeds
[D] Wrinkled and green seeds



Question No:10

The genotype of an individual is Rr Bb. How many different types of gametes will it produce based on the law of independent assortment?

[A] 16
[B] 9
[C] 8
[D] 4



Question No:11

Which of the following is heterozygous for two pairs of alleles?

[A] TTRR
[B] TrRR
[C] ttrr
[D] TrtR



Question No:12

In Mendel’s experiment, nature of seed coat, flower colour, position of flower, pod colour, stem height, etc., are referred to as

[A] Alleles
[B] Genotypes
[C] Phenotypes
[D] All of the above



Question No:13

A cross between a homozygous recessive and a heterozygous plant is called

[A] Monohybrid cross
[B] Dihybrid cross
[C] Test cross
[D] Back cross



Question No:14

Cross between F₁, plant and recessive female plant is called

[A] Back cross
[B] Test cross
[C] Out cross
[D] Mutation



Question No:15

In F₂ generation, a phenotypic ratio of 1:1:1:1 exhibits

[A] Back cross
[B] Monohybrid test cross
[C] Lethality
[D] Dihybrid test cross