What is the difference between a phenotype and a genotype

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.