Sexual Behavior

Question 1

Sexual determination happens in?

Answer 1

Utero

Question 2

The process during development through which an individual becomes either male or female.

Answer 2

Sexual determination

Question 3

determines gonadal sex, which in turn, results in secretion of specific hormones that determine phenotypic sex.

Answer 3

genotypic sex

Question 4

the genetic information contained in the DNA, which is fixed at fertilization and remains constant throughout life.

Answer 4

genotype

Question 5

How many pairs of chromosomes at fertilization?

Answer 5

23 pairs

Question 6

__ pairs determine physical development

Answer 6

22

Question 7

___ pair(s) determine the sex

Answer 7

1

Question 8

_____ determines sex of the offspring

Answer 8

Males

Question 9

the physical characteristics males or females possess, which can change over time (what we show to the world).

Answer 9

Phenotype

Question 10

________ ____ determines gonadal sex. Then gonadal hormone secretions determine phenotypic sex!

Answer 10

Genotypic sex

Question 11

If Sry gene present, what happens?

Answer 11

Testes form

Question 12

If Sry gene absent?

Answer 12

Ovaries develop

Question 13

The Y gene is what?

Answer 13

The sex determining gene

Question 14

Describe Masculine development?

Answer 14

Release ANTI mullerian hormone, regress mullerian ducts, promotes wolfian ducts

Question 15

Describe feminine development?

Answer 15

ABSENCE of testes, means absence of anti-mullerian ducts and mullerian ducts develop. Absence of testosterone = wolfian ducts regress.

Question 16

Genotypic sex determines:

Answer 16

Gonadal sex

Question 17

Wolffian duct:

Answer 17

Masculine

Question 18

Mullerian ducts:

Answer 18

Feminine

Question 19

Sry gene only in:

Answer 19

Masculine development

Question 20

Gonadal secretions determine:

Answer 20

Phenotypic sex

Question 21

Secondary sex characteristics in female:

Answer 21

Enlarged breasts and widened hips

Question 22

Secondary sex characteristics in male:

Answer 22

beard, deep voice

Question 23

Birth to sexual maturity is when what happens?

Answer 23

Organizational hormone effects

Question 24

Sexual maturity, sexual behavior, and parental behavior is when what happens?

Answer 24

Activational hormone effects

Question 25

PERMANENT effects of hormone exposure that occur EARLY in development

Answer 25

organizational hormone effects

Question 26

presence of masculine brain and behavior

Answer 26

Masculinization

Question 27

presence of feminine brain and behavior

Answer 27

feminization

Question 28

T is converted to estrogen by armatase and does what to the brain?

Answer 28

Masculinizes it

Question 29

What protein binds to estrogen in women to not allow it across the BBB?

Answer 29

alpha fetaprotein

Question 30

Testes release what?

Answer 30

Testosterone

Question 31

Ovaries release what?

Answer 31

Estrogen

Question 32

Have male genotypes, but absence of T and AHM making no male genitals makes the person have female genotype is known as:

Answer 32

Androgen Insensitivity syndrome

Question 33

Male genotype, don't produce AMH, but T exposure creates male genitals and they have a uterus that never regresses is known as:

Answer 33

Persistent mullerian duct syndrom

Question 34

Only have a 1 X chromosome, no Y, and no second x chromosome & no genitals develop... is what abnormality?

Answer 34

Turners syndrome

Question 35

In turners syndrome the individual has what type of phenotype?

Answer 35

Female

Question 36

When the adrenals secrete abnormally high levels of androgens?

Answer 36

Congenital adrenal hyperplasia

Question 37

Organizational effects are?

Answer 37

permanent and early in life

Question 38

XY genotype is normal; XX genotype, too much androgens, ambiguous genitalia

Answer 38

Congenital adrenal hyperplasia

Question 39

Neural control of hormones:

Answer 39

Hypothalamus and pituitary

Question 40

Hypothalamuus releases ________ --> stimulates _______ to release ________ (E & T) --> stimulates _________

Answer 40

GnRH, gonadotropins, gonads

Question 41

_______ effects of hormone exposure that occur LATER in development.

Answer 41

transient

Question 42

Difference between organizational and activational hormone effects?

Answer 42

Organizational: permanent, early Activational: transiet, later