A would be the correct choice here
On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, which helped him to develop his theory of natural selection. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".
Hope this helps! ;)
Answer: B) The mother's father must also carry the recessive allele
Explanation:
How Are Men Affected by Cystic Fibrosis? Males account for slightly more than 50 percent of all cases of cystic fibrosis (CF) but generally have better outcomes than females until about age 20.
You can tell if matter is conserved if the substance changes . If the substance changes then matter has been conserved .
that is true. its like when a horse goes into heat. *ready to mate*