Question

A male beetle has the genotype ttbb. if this beetle mates with a female with genotype ttbb, what is the chance their offspring will have the genotype ttbb?

Answer 1

25%

Step-by-step explanation:

on god, if u don't believe u is wrong :)

Answer 2

The correct genotypes of the parents are Ttbb male and the TTBb female and the TtBb for the offspring.
The image below presents a cross of these two genotypes Ttbb and TTBb.
As you can see marked with green, 1/4 of the offspring would have the TtBb and be heterozygous for both traits.