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?

• 50:50

• 9:1

• 1:3

• 1:3

In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRYY x rryy?

• Only round seeds with green cotyledons

• Only wrinkled seeds with yellow cotyledons

• Only wrinkled seeds with green cotyledons

• Only wrinkled seeds with green cotyledons

Which one of the following is an example of polygenic inheritance?

• Flower colour in Mirabilis jalapa

• Production of male honey bee

• Pod shape in garden pea

• Pod shape in garden pea

Phenotype of an organism is the result of

• mutations and linkages

• cytoplasmic effects and nutrition

• environmental changes and sexual dimorphism

• environmental changes and sexual dimorphism

Which one of the following is the most suitable, medium for culture of Drosophila melanogaster?

• Moist bread

• Agar agar

• Ripe banana

• Ripe banana