Question

Examine the Punnett square below, which represents a cross between a male and a female pear tree.What are the possible genetic variations of offspring in this cross? BB Bb bb

Answer 1

It appears that your offspring have a 50% chance of having BB and 50% chance of having Bb. bb isn't a possibility.

Answer 2

Answer: The correct answer is -

The possible genetic variations of offspring in this cross would be BB and Bb, which will be produced in the ratio in the ratio 1:1.

The genotype of parents in the cross are- Bb and BB.

When they are crossed with each other, they will produce BB, BB, Bb, Bb offsprings (that can also be filled in the punett square according to the fusion of the gametes shown there)

This indicates that only two genetic variations are produced in the offspring of this cross, which are BB and Bb (in the ratio 1:1).

In other words, there is 50% chance of BB and 50% chance of Bb.