Question

1.4.2 test (cst): heredity
question 16 of 25
why is a cell that results from fertilization genetically different from the cells
of the parents?
a. because the cell develops mutations as a result of sexual
reproduction
b. because the cell is a combination of two parents gametes
c. because the cell now contains twice the number of chromosomes
d. because the cell has an incomplete set of chromosomes

Explanation:

During fertilization, gametes (sperm and egg) from two parents combine. Each gamete has half the number of chromosomes (haploid). When they fuse, the resulting zygote has a unique combination of genetic material from both parents, making it genetically different from the parent cells. Option A is incorrect as mutations are not the main reason here. Option C is wrong because the chromosome number is restored to the diploid number (not double - the diploid number of parents). Option D is incorrect as the zygote has a complete set of chromosomes (diploid).

Answer:

B. Because the cell is a combination of two parents' gametes