Chapter 6

Question 1

t/f maleness and femaleness is determined at conception

Answer 1

t

Question 2

t/f maleness and femaleness is determined at conception

Answer 2

t

Question 3

t/f maleness and femaleness is determined at conception

Answer 3

t

Question 4

t/f maleness and femaleness is determined at conception

Answer 4

t

Question 5

t/f maleness and femaleness is determined at conception

Answer 5

t

Question 5

t/f maleness and femaleness is determined at conception

Answer 5

t

Question 5

t/f maleness and femaleness is determined at conception

Answer 5

t

Question 5

t/f maleness and femaleness is determined at conception

Answer 5

t

Question 6

t/f maleness and femaleness is determined at conception

Answer 6

t

Question 6

t/f maleness and femaleness is determined at conception

Answer 6

t

Question 6

t/f maleness and femaleness is determined at conception

Answer 6

t

Question 7

t/f maleness and femaleness is determined at conception

Answer 7

t

Question 7

t/f maleness and femaleness is determined at conception

Answer 7

t

Question 8

on what week of the prenatal development do gender differences become apparent

Answer 8

9

Question 9

on what week of prenatal development do all embryos develop 2 sets of unspecialized gonads

Answer 9

5

Question 10

________ ____ develop, female structures form

Answer 10

mullerian ducts

Question 11

_________ _____ develop, male sexual structures form

Answer 11

wolffian ducts

Question 12

humans that have heterogametic sex with different sex chromosomes

Answer 12

male

Question 13

humans that have homogametic sex

Answer 13

female

Question 14

t/f presence of SRY activation will lead to the development of male

Answer 14

t

Question 15

t/f absence of SRY activation will lead to the development of female

Answer 15

t

Question 16

X chromosome is (larger or smaller) than Y chromosoe

Answer 16

larger

Question 17

sequences of letters that read the same in both directions

Answer 17

palindromes

Question 18

region of the Y chromosome that comprises the 5% of the chromosome and contains genes shared with X chromosome

Answer 18

pseudoautosomal region

Question 19

region of the Y chromosome that comprises the 95% of the chromosome and contains majority of genes including SRY and AZF

Answer 19

male specific region

Question 20

what determines the sex

Answer 20

SRY gene

Question 21

what gene encodes a protein essential to producing sperm

Answer 21

AZF gene

Question 22

____________ ______ protein controls the expression of other genes; Stimulates male development; Sends signals to the indifferent gonads to destroy female structures; Stimulates development of male structures

Answer 22

transcription factor

Question 23

abnormality of an individual with both male and female sexual structures

Answer 23

hermaphroditism

Question 24

individuals whose internal structures are inconsistent with external structures, or whose genitalia are ambiguous

Answer 24

intersex

Question 25

presence of male and female structures at different stages of life

Answer 25

pseudohermaphroditism

Question 26

lack of androgen receptors which results in a person that looks female but is actually XY or vice versa

Answer 26

androgen insensitivity syndrome

Question 27

absence of DHT - penis cannot form - fetus develop externally as female

Answer 27

5-alpha reductase deficiency

Question 28

high levels of androgens - males may enter puberty as early as 3 yo; females - have deepened voice, facial hair grows, menstruation does not occur

Answer 28

congenital adrenal hyperplasia

Question 29

phenotype and sex chromosome of one gender, but identifies extremely strongly with the opposite gender

Answer 29

transgender

Question 30

refers to a male who prefers women's clothing

Answer 30

transvestism

Question 31

t/f Identical twins are more likely to be homosexual than members of fraternal twin pairs

Answer 31

t

Question 32

Person’s phenotype and genotype are consistent. Physical attraction is toward members of the same sex

Answer 32

homosexuality

Question 33

in what week of prenatal development does the undifferentiated structure begins to develop as testis or ovary

Answer 33

6

Question 34

strong feelings of being male or female develop

Answer 34

gender identity

Question 35

attraction to same or opposite sex

Answer 35

sexual orientation

Question 36

the proportion of males to females in a human population

Answer 36

sex ratio

Question 37

genes on the Y chromosome are said to be ________

Answer 37

y-linked

Question 38

y-linked traits are very (common or rare)

Answer 38

rare

Question 39

y/n can infertility be transmitted

Answer 39

n

Question 40

human male is considered (homozygous, heterozygous, hemizygous) for X-linked traits

Answer 40

hemizygous