Meiosis & Reproduction Practice Test

1. In meiosis, the DNA is replicated ___. Once Twice Three times Never

2. Which of these is accomplished by meiosis? Choose all that apply. It allows organisms to replace worn cells. It produces unique gametes. It allows multicelled organisms to get bigger in size. It allows unicellular organisms to reproduce. It ensures even distribution of chromosomes.

3. Which of these describes sexual reproduction? Involves cells from mitosis Involves cells from meiosis Offspring are genetic clones Organisms have 1 set of chromosomes

4. If nondisjunction has occurred during meiosis, which of these is true? The offspring will be affected. Crossing-over can’t take place. The resulting somatic cells will be affected. There is no effect.

5. Which of these helps to increase variation? Choose all that apply. Alleles separate Crossing-over DNA replication Independent assortment

6. Which of these does NOT stimulate estrogen & progesterone to release? Formation of corpus luteum Fertilization Ovulation Implantation

7. Sperm are made in tubes called the ___. Epididymis Ejaculatory duct Seminiferous tubules Urethra

8. Which of these could NOT take place during ovulation? Formation of corpus luteum Fertilization Increase of LH Implantation

9. Which of these hormones stimulate the release of estrogen & progesterone? Choose all that apply. Increased GnRH Increased HCG Increased LH Increased FSH Increased oxytocin

10. In order for the embryo to implant, what condition must be met? The endometrium must be thick enough. The egg has to be released. The endometrium must be released. The corpus luteum breaks down.