meiosis II

Question 1

prophase 2

Answer 1

1) in cell a and the same applies to cell b
2) each chromosome is visible as two chromatids
3) centromere splits into centrioles which move to opposite poles
4) nuclear membrane begins to disappear

Question 2

metaphase 2

Answer 2

the chromosomes become arranged along the equator singly attached to the spindle threads

Question 3

anaphase 2

Answer 3

1) the chromosomes split and the two chromatids making up each chromosome
2) are pulled towards opposite poles
3) when the spindle threads contract

each chromatid is really a single stranded chromosomes since DNA replication took place in interphase 1

Question 4

telophase 2

Answer 4

1) two groups of chromosomes occur one at each end of the chromosome cell forming two new nuclei
2) the cytoplasm of cell A divides to form two new cells
3) in the same way cell b also divides to form two new cells
4) in total there are now four new cells
5) the nucleus in each of these four cells has half the number of chromosomes we originally started with in the first division
6) the four cells are genetically different because of crossing over

Question 5

how is meiosis similar to mitosis

Answer 5

each of the two cells formed during the first division of meiosis undergoes the second division

Question 6

why is there no interphase 2 in meiosis II

Answer 6

because DNA replication already took place before meiosis I . the chromosomes are still double stranded at the start of meiosis II

Question 7

how can you learn the name of the phases in order

Answer 7

by using the word IPMAT