A researcher has hypothesized that the chemical tributyltin (an additive in boat paint) seeps out of the paint into the water an
d causes reproductive defects in developing marine snails. Which of the following would be a good control in an experiment that tests the effects of tributyltin on developing snails?A. Developing snails are kept in a dry tank to avoid exposure to contaminated water.B. Developing snails are kept in a tank of water and exposed to boat paint that does not contain tributyltinC. Developing snails are kept in a tank of water and exposed to below-expected levels of tributyltin.D. Developing snails are kept in a tank of water that has never been exposed to boat paint.
1/4 or 25% will have the homozygous recessive genotype. 25% will have the homozygous dominant phenotype. 50% will be heterozygous. We would use a punnet square to figure this out. I’ve attached a picture of one to help you
