In humans, tongue rolling is dominant. Which of the following statements is true? a- You always know the genotype of a tongue roller.
b- You always know the genotype of a non-roller.
c- A tongue roller would always have a genotype of rr.
d- A non-roller has two possible genotypes.
HELP!!!

Discuss the functions of epithelial connective nerviud and muscular tissues

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

What pattern of migration do whales follow?