An organism is homozygous dominant for one trait and heterozygous for another. A scientist uses this organism in a dihybrid cross. How many different allele combinations can the organism produce for these traits in his or her gametes?

two

sixteen

four

one

An organism is homozygous dominant for one trait and heterozygous for another. What is the probability of the organism producing a gamete with one dominant allele and one recessive allele for these traits?

4 out of 4

1 out of 2

1 out of 4

2 out of 16

Thanks!