Chapter 13

Question 1

Prenatal stages

Answer 1

Three trimesters

9 months

Question 2

Childhood adolescence

Answer 2

Infancy 2 months-3 years

Postweaning 3-7 yrs

Juvenile: girls 7-10/ boys 7-12

Puberty at the end of juvenile years

Adolescence 5-10 years after puberty

Question 3

Adulthood

Answer 3

Reproductive period

Women: 20-50 years

Men: 20-70 years

Question 4

Menopause

Answer 4

Around age 50

The end of menstruation in women

Question 5

Senescence

Answer 5

Decline physiological functioning usually associated with aging

50+

Question 6

Pleiotropic genes

Answer 6

Genes that have more than one effect

Genes that have different effects at different times in the life cycle

Question 7

Life history theory

Answer 7

Seeks to understand the impact of natural selection on life cycles

Question 8

The adolescent stage is present in ?

Answer 8

Humans only

Question 9

A long period of female post reproductive time is found in ?

Answer 9

Humans

Question 10

Menarche

Answer 10

Females first menstruation

Question 11

Approximately how long do chimpanzees, gorillas, and women in foraging societies nurse their infants?

Answer 11

3 -4 years

Question 12

What does the grandmother hypothesis propose to explain?

Answer 12

The existence of menopause

Question 13

Telomere hypothesis

Answer 13

Proposes to explain senescence that cells that dive throughout the life course have shortened DNA sequences at the end of the chromosomes

Question 14

The age of onset of menarche is affected by ?

Answer 14

Telomerase

Question 15

At birth the human brain is approximately what percent of its adult size?

Answer 15

25 %

Question 16

The human brain reaches 95% of its adult size by what age?

Answer 16

10 years