Can you curl your tongue up on the sides?I’m curling in humans is a dominant genetic trait. Suppose a man who is Tt for tongue curling a woman who is also Tt for this trait. what are the possible genotypes and phenotypes of their children and the percent chance for each?

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.