Steps of Meiosis 1

Question 1

List the stages of meiosis 1 in order

Answer 1

interphase, prophase1, metaphase1, anaphase1,telophase1, cytokinesis

Question 2

Explain interphase in meiosis 1

Answer 2

During interphase, DNA is replicated to produce a tetrad (homologous chromosome that has 2 sister chromatids)

Question 3

what happens in prophase 1 during meiosis?

Answer 3

-chromosomes shorten and thicken

-crossing over , mixes genetic material

-Each sister chromatid intertwines with a sister chromatid from matching homologous chromosomes in a process called synapsis

-Nuclear membrane disappears

-Spindle fibres form

-centrioles move to end of cell

Question 4

what happens in metaphase 1 in meiosis?

Answer 4

-spindle fibres attach to centromeres on chromosomes

-homologous chromosomes (tetrads) lineup in the middle of cell

Question 5

What happens in anaphase one in meiosis?

Answer 5

spinal fibres pull tetrad apart

Homologous pairs separate and move to opposite sides in cell

Question 6

what happens in Telophase one during meiosis?

Answer 6

homologous pairs are at opposite sides

-Cell divides into two

-Spinal fibres disappear

-Nuclear membrane forms around sister chromatids

-Each daughter nucleus receives 1 member of the original chromosome pair

Question 7

what is synapsis

Answer 7

process where sister chromatid intertwines with a sister chromatid

Question 8

Is the DNA duplication between meiosis one and two?

Answer 8

NO

Question 9

what is a tetrad

Answer 9

A pair of homologous chromosomes