John can roll his tongue and is heterozygous for this dominant trait (Rr). John’s second toe is shorter than his first. His wife
Rita cannot roll her tongue and has a longer second toe. Rita is heterozygous for this dominant trait (Tt). Use a Punnett square to predict the possible genotype(s) and phenotype(s) of their first child?
if birth rate become higher than the death rate then the population will increase surely, cuz there are more people who add up to form a population but it's decline rate is lesser.
Binucleated cells are found in onion root tips are examined under a microscope. What does binucleated mean? which part of the cell cycle is interrupted to cause this result?