Fertilization is a process that occurs during sexual reproduction.
During fertilization, a sperm cell unites with an egg cell to form a(n) _.

A. spore
B. gamete
C. ovary
D. zygote

Answer is D

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16