Final answer:
The false statement regarding a cross between two Tt parents is 'd. An offspring is more likely to inherit a T allele than a t allele,' because the probabilities of inheriting either allele are equal.
Step-by-step explanation:
The question asks to identify the false statement regarding a cross between two Tt parents in genetics. Let's examine the options given.
- One-fourth of the offspring is predicted to be tt. This is true based on Mendelian genetics, as a cross between two Tt parents (heterozygotes) will typically result in 25% tt offspring.
- Three-fourths of the offspring are predicted to exhibit the dominant trait. This is also true, as the dominant trait will appear in TT, Tt, and tT genotypes, which collectively make up 75% of the offspring.
- The offspring can be heterozygous or homozygous. This is a true statement as well. Offspring from a Tt x Tt cross can be TT (homozygous dominant), Tt (heterozygous), or tt (homozygous recessive).
- An offspring is more likely to inherit a T allele than a t allele. This statement is false because in a cross between two Tt parents, the offspring have an equal probability of inheriting a T or a t allele, which is 50%.
Therefore, the false statement regarding the cross is 'd. An offspring is more likely to inherit a T allele than a t allele.' because the chances of inheriting either allele from heterozygous parents are equal.