Question

The given Punnett square shows the cross between pure tall plant and heterozygous tall plant. How many number of short offsprings are formed?
T= tall plant
t = short plant

• A. None are short
• B. 25% are short
• C. 50% are short
• D. 75% are short
• E. All are short

Answer 1

The correct option is A None are short

A monohybrid cross is a mating between two individuals with different alleles at one genetic locus of interest.

T is dominant trait over t which is a recessive trait.

Cross between TT x Tt will give TT, Tt, TT and Tt. As T is dominant over t, therefore all the plants will be tall and no plant will be short. TT is homozygous tall and Tt is the heterozygous tall. Hence option A is correct.