13.0

Question 1

Heredity

Answer 1

Transmission of traits from one generation to the next

Question 2

Variation

Answer 2

Demonstrated by the differences in appearance that offspring show from parents and siblings

Question 3

Genetics

Answer 3

Scientific study of heredity and variation

Question 4

Life cycle

Answer 4

Generation-to generation sequence of stages in the reproductive history of an organism

Question 5

Karyotype

Answer 5

Ordered display of the pairs of chromosomes from a cell

Question 6

Homologous chromosomes/homologs

Answer 6

2 chromosomes in each pair

Question 7

Chromosomes in a homologous pair are the ___ length and ___ and carry genes controlling the same inherited characters

Answer 7

Length; shape

Question 8

Sex chromosomes

Answer 8

Determine the sex of the individual, X and Y

Question 9

Autosomes

Answer 9

Remaining 22 pairs of chromosomes

Question 10

XX

Answer 10

Human females have a homologous pair of x chromosomes

Question 11

XY

Answer 11

Males

Question 12

Diploid cell

Answer 12

2n; has two sets of chromosomes

Question 13

Diploid number of humans

Answer 13

46; 2n=46

Question 14

In a cell in which DNA sysnthesis has occurred, each chromosomes is ____. Where?

Answer 14

Replicated; S phase

Question 15

Each replicated chromosomes consists of two identical _____ _____

Answer 15

Sister chromatids

Question 16

Haploid

Answer 16

n; gamete (sperm or egg) contains a single set of chromosomes