DMD Lesson 5 reading

Body cells (hair, skin, brain, bone)

• zygote

• somatic cells

• germline cells

• gametes

Cell division that occurs in all body cells

• Mitosis

• Meiosis

• Binary fission

• Natural selection

How many TOTAL chromosomes are inside the nucleus of every human cell?

• 46

• 23

• 12

• 52

How many PAIRS of chromosomes are inside every human cell?

• 46

• 23

• 12

• 52

Before a baby can be made, and before fertilization can happen, human bodies must make __________.

• gametes

• genes

• somatic cells

• meiosis

Egg and sperm cells

• Sex chromosomes

• Alleles

• Gametes

• Zygote

Cells that divide to produce gametes

• nerve cells

• sex cells

• somatic cells

• germline cells

Cell division that occurs to make sex cells

• Meiosis

• Mitosis

• Binary fission

• Homologous chromosomes

The product(s) of meiosis

• genome

• chromosomes

• sex cells

• alleles

How many new sex cells are made at the end of meiosis?

• 4

• 3

• 2

• 1