Meisos (lecture notes)

Question 1

Simple explanation of binary fission

Answer 1

Prokaryotes
Reproduction = dividing
Chromosome replication begins, replication continues, replication finishes with two daughter cells that are genetically identical

Question 2

Every cell has 2 pairs of chromosomes called

Answer 2

Homologous

Question 3

Term for- how many sets of chromosomes?

Answer 3

Ploidy

Question 4

What 3 basic steps happen during meiosis?

Answer 4

1) interphase
2) meiosis I
3) meiosis II

Question 5

(Blank) cells may undergo either mitosis or meiosis but (blank) cells only undergo mitosis

Answer 5

Diploid

Haploid

Question 6

Explain prophase I

Answer 6

• chromosomes condense - difference = form synapsis (line up genes)
• crossing over
• chromosomes start to align at the poles and produce spindle fibers

Question 7

Physical association of pair of chromosomes

Answer 7

Synopsis

Question 8

Paternal and maternal segments (non-sister chromatids) swap

Answer 8

Crossing over

Question 9

Explain metaphase I

Answer 9

Homologous and chromosomes align

Question 10

Explain anaphase I

Answer 10

• sister chromatids remain attached

- homologous chromosomes separate (each pair)

Question 11

Explain end of telophase I and cytokinesis

Answer 11

Two haploid cells form- each chromosome still consists of two sister chromatids

Question 12

Explain meiosis II

Answer 12

During another round of cell division, the sister chromatids finally separate; four haploid daughter cells result, containing unduplicated chromosomes