12.4

Question 1

The offspring of two parents obtains a single copy of every gene
from each parent.

Answer 1

True

Question 2

gamete

Answer 2

an organism’s reproductive cells

Question 3

gametes must have

Answer 3

one complete set of genes

Question 4

Genes are located at specific positions on…

Answer 4

Chromosomes

Question 5

Homologous

Answer 5

A pair of corresponding chromosomes is homozygous

Question 6

One member of each homologous chromosome pair comes from

each…

Answer 6

gene

Question 7

A cell that contains both sets of homologous chromosomes is

Answer 7

diploid=2

Question 8

The gametes of sexually reproducing organisms are

Answer 8

haploid=1/2

Question 9

Mitosis

Answer 9

first

Question 10

prophase 1

Answer 10

homologous chromosomes pair up and exchange fragments (crossing over)

Question 11

metaphase 1

Answer 11

homologues pairs line up at metaphase plate

Question 12

anaphase 1

Answer 12

homologous separate to opposite ends of the cell (sister chromatids stay together)

Question 13

telophase 1

Answer 13

newly formed cells are haploid (because they split into 1/2)
CHROMOSOMES HAVE NON-IDENTICAL SISTER CHROMATIDS

Question 14

miosis (mitosis 2)

Answer 14

second

Question 15

prophase 2

Answer 15

chromosomes condense

Question 16

metaphase 2

Answer 16

chromosomes line up at metaphase plate

Question 17

anaphase 2

Answer 17

sister chromatids separate to opposite ends of the cells

Question 18

telophase 2

Answer 18

newly form gametes are haploids (each chromosome has just one chromatid)

Question 19

cross over

Answer 19

exchange of two homoeologous

Question 20

when doss cross over happen

Answer 20

prophase 1

Question 21

what happens after cross over

Answer 21

genetic diversity

Question 22

chromosome number doesn’t change in

Answer 22

mitosis

Question 23

chromosome number is split in half in

Answer 23

miosis

Question 24

linked genes??

Answer 24

from sharing chromosomes (genes sharing spaces clump together to form traits that go with one another the closer they are the more likely this will happen)

Question 25

Mendel’s Laws of Heredity

Answer 25

The Law of Segregation: Each inherited trait is defined by a gene pair. …
The Law of Independent Assortment: Genes for different traits are sorted separately from one another so that the inheritance of one trait is not dependent on the inheritance of another.