Sexual reproduction and meiosis

Question 1

karyotype

Answer 1

number of chromosomes in a cell

Question 2

homologous chromosomes

Answer 2

DNA strands with the same genes

Question 3

Chromatids

Answer 3

identical copies of the same chromosome

Question 4

synapsis

Answer 4

joining of homologous chromosomes

Question 5

cross-over

Answer 5

transfer of alleles between homologous chromosomes

Question 6

diploid cell

Answer 6

human somatic cell with 2 sets of chromosomes

Question 7

haploid cell

Answer 7

gamete with 1 set of chromosome

Question 8

prophase 1

Answer 8

chromosomes become visible

spindle forms

Question 9

metaphase 1

Answer 9

homologous chromosomes line at the metaphase plate

Question 10

anaphase 1

Answer 10

chromosomes separate and start going to opposite poles

Question 11

telophase 1

Answer 11

nuclear envelope forms around chromosomes

Question 12

prophase 2

Answer 12

nucleare envelope dissolves and new spindle apparatus forms

Question 13

metaphase 2

Answer 13

chromosomes align on metaphase plate

Question 14

anaphase 2

Answer 14

sister chromatids are separted

Question 15

telophase 2

Answer 15

nuclear envelope reforms

Question 16

nondisjunction

Answer 16

failure to separate

Question 17

aneuploid gmetes

Answer 17

missing or extra chromosome