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

Question

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

Gabriella Anderson · Accepted Answer

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

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"#.

William Albracht · Answer

undefined The parental organism with genotype "TT" will produce gametes with the genotype "T", and the parental organism with genotype "Tt" will produce gametes with genotypes "T" and "t".