Type of reproduction by which offspring are produced from _________________________ parents.

Gametes (sex cells) are formed by ___

meiosis

females have ____ chromosomes

2 X

Each gamete contains _pairs of _

23 chromosomes

Offspring appearance vary due to new ___.

combinations of genes.

A sperm enters an egg during ___.

fertilization

Each person has ____ of sex chromosomes in each cell.

one pair

The ____ in the female produce female gametes or ___.

ovary eggs

The ___ in the male produces male __ or ___.

testis gametes sperm

Type of reproduction by which offspring are produced from _________________________ parents.

two-Sexual reproduction

Males have an _ chromosome

x and y

The two fuse to form a _ with 46 pairs of chromosomes.

zygote 46 pairs