Question

One parental organism has the genotype `"TT"`, and another has the genotype `"Tt"`. What will the genotypes of their gametes be?

Answer 1

Parent organism a) would produce only one type of gamete, `"T"`.
Parent organism b) would produce two types of gametes, `"T"` and `"t"`.

Explanation:

The parental diploid genotypes, such as `"TT"` and `"Tt"` will be separated into haploid gametes during meiosis. So the parent with the genotype `"TT"` can only pass on the `"T"` allele to all of its gametes. So it would produce only one type of gamete when it comes to the `"TT"` genotype, which would be `"T"`. The parent with the genotype `"Tt"` has two different alleles, and half of its gametes will have the `"T"` allele, and half will have the `"t"` allele. So in regard to the `"Tt"` genotype, the parent organism will produce two different types of gametes, `"T"` and `"t"`.