meiosis and sexual reproduction

Question 1

mitosis

Answer 1

Cell division for growth and repair, creates identical daughter cells, diploid (2n) meaning has a complete complement of chromosomes

Question 2

meiosis

Answer 2

A type of nuclear division that reduces the chromosome number of the cell by 50%; this creates haploid (n) cells

Question 3

gametes

Answer 3

reproductive cells created via meiosis

Question 4

zygote

Answer 4

diploid cell created when sperm and egg merge in sexual reproduction

Question 5

karyotype

Answer 5

A pictorial display of human chromosomes

Question 6

allele

Answer 6

alternative forms of genes

Question 7

what does meiosis need to work

Answer 7

cells need to duplicate their DNA then under go 2 divisions and reduce the DNA by half.

Question 8

crossing over

Answer 8

the exchange of genetic material between nonsister chromatids

Question 9

independent assortment

Answer 9

The separating of chromosomes independently or randomly

Question 10

what is genetic variation important for?

Answer 10

possible genetic variation is important for the long term survival of a species; new genetic combinations may be selected for and allow for a
species to persistent in an ever changing environment

Question 11

s phase

Answer 11

DNA is replicated

Question 12

prophase 1

Answer 12

nuclear envelope fragments and nucleolus
disappears. Homologous chromosome pair during synapsis

Question 13

metaphase 1

Answer 13

Homologous chromosome pairs align on the
metaphase plate

Question 14

anaphase 1

Answer 14

Homologous chromosomes separate and are
pulled away from each other

Question 15

telophase 1

Answer 15

Daughter cells have one chromosome from each
homologous pair and we see the cleavage furrow being formed

Question 16

interkenesis

Answer 16

after telophase when the new cells are resting
before entering Meiosis II. Chromosomes still consist of two chromatids

Question 17

prophase II

Answer 17

Cells have one chromosome from each
homologous pair

Question 18

metaphase II

Answer 18

Chromosomes align at the metaphase plate

Question 19

anaphase II

Answer 19

Daughter chromosomes move toward the
poles and start to separate

Question 20

telophase II

Answer 20

Cleavage furrow occurs and nuclei starts to form

Question 21

cytokenesis

Answer 21

daughter cells are formed and are haploid

Question 22

gametogenesis

Answer 22

the production of gametes

Question 23

where does spermatogenesis and oogenesis occur

Answer 23

Spermatogenesis occurs in the testes of an animal and oogenesis occurs in the ovaries of an animal