Chapter 8 - Genetic recombination

Question 1

one copy of each chromosome (n)

Answer 1

haploid

Question 2

two copies of each chromosome (2n)

Answer 2

diploid

Question 3

normal animal cells are

Answer 3

2n diploid

Question 4

how many chromosomes do humans normally have

Answer 4

23 pairs or 46

Question 5

meiosis does what?

Answer 5

reduces the number of chromosomes to keep them equal from generation to generation

Question 6

what does meiosis produce

Answer 6

haploid cells for sexual reproduction

Question 7

homologous chromosomes are also called and contain what

Answer 7

tetrad, different versions of the same information

Question 8

duplicated chromosome is called a

Answer 8

sister chromatid

Question 9

what is synapsis

Answer 9

crossing over occurring between pairs

Question 10

what is crossing over

Answer 10

DNA pieces being swapped from one chromatid to another

Question 11

egg and sperm fuse together during what process

Answer 11

fertilization

Question 12

in the animal cycle what components are in the diploid phase and what process do they go through?

Answer 12

Zygote 2n, Animal 2n, mitosis

Question 13

in the animal cycle what components are haploid and what processes do they go through?

Answer 13

sperm and egg (n), meiosis and fertilization