DNA, Mitosis, and Meiosis

Most of the cells in the human body are produced by

• mitosis
• meiosis

Cells made through meiosis are genetically

• different

• identical

What causes genetic variation in meiosis?

• there is no genetic variation in meiosis

• crossing over of chromosomes
• separation of chromosomes
• sperm and egg coming together after meiosis

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which organelle is DNA usually found in?

• cell membrane

• ribosome

• chloroplast

• nucleus

The drawing shows the structure of what molecule?

• A DNA molecule
• A lipid molecule
• A carbohydrate molecule
• A protein molecule

A long chain of amino acids is a/an

• protein
• nucleic acid
• nitrogenous base

• mRNA

A strand of DNA that looks like a twisted ladder is called a _____________________

• triple twist
• corkscrew
• double helix
• chain reaction

In which phase does the DNA copy itself?

• interphase

• metaphase

• anaphase

• telophase