Mitosis and Meiosis-Chapter 10 and 11

Germ line cells undergo meiosis to form —

• Reproductive Cells

• Haploid Cells

• Sperm and eggs

• Gametes

• All of the above

The union of gametes is termed

• meiosis

• mitosis

• fertilization

• alternation of generations

• inoculation

Genetic recombination occurs when —

• Sister chromatids align gene for gene

• 
  Genes are exchanged between adjacent chromosomes

• Homologous pairs line up across the metaphase plate

• Homologous pairs line up across the metaphase plate

What happens to the spindle apparatus after telophase is complete?

• the protein monomers form daughter nuclei

• 
  the protein monomers form lysosomes

• 
  the protein monomers form the cytoskeleton

• the protein monomers form the rough ER

where would a researcher find histones?

• 
  in chromosomes with DNA coiled around them

• in the spindle apparatus

• 
  at the formation of the cell plate

• surrounding a nuclear pore

Homologous chromosomes and sister chromatids are the same thing.

• T

• F

Injecting MPF (maturation promoting factor) into cells -

• signals apoptosis

• 
  causes cell lysis

• induces mitosis

• moves the cell into G0

Patients with Edward's syndrome have a trisomy of chromosome 18. What does this mean?

• chromosome 18 has been deleted

• 
  chromosome 18 is haploid

• there are 3 copies of chromosome 18

• chromosome 18 has transposed genes

If a researcher looked at a cell and noticed a straight line of sister chromatids, which phase would they be looking at?

• prophase

• metaphase

• anaphase

• telophase

50% of cancerous cells have nonfunctioning p53 proteins. How does p53 help prevent cells from becoming cancerous?

• 
  it binds growth factors

• 
  it checks DNA for damage

• 
  it induces the shift from G1 to S

• 
  it stops mutations from occurring