lec 25-27 Mitosis and Meiosis

Interphase: S phase, involves ...

• Synthesis of proteins

• Synthesis of organelles

• Synthesis of DNA

• DNA repair

Apoptosis is ...

• programmed cell death

• premature cell death

Spindle microtubules attach to chromatids, at which stage of mitosis.

• Prophase

• Prometaphase

• Metaphase

• Anaphase

Spindle fibres disassemble, at which stage of mitosis?

• Metaphase

• Anaphase

• Telophase

• Cytokineses

Spindle poles move away from each other, in which stage of mitosis?

• Prophase

• Prometaphase

• Metaphase

• Anaphase

Which of these is not an advantage of asexual reproduction?

• Fast

• Energy efficient

• Only need 1 organism

• creates genetically diverse offspring

The end product of mieosis is

• 4 diploid cells

• 2 diploid cells

• 4 haploid cells

• 2 haploid cells

Genetic variation by crossing over occurs in which stage of meiosis?

• Prophase I

• Anaphase I

• Prophase II

• Anaphase II

Which of these is not a potential defect in meiosis?

• Non-disjunction

• Translocation

• Inversion

• Transversion

Diploid cells have

• 23 chromosomes

• 46 chromosomes

• 22 chromosomes

• 44 chromosomes