Chapter 1 Flashcards
1
Q
Heredity
A
- Human eggs contain 23 chromosomes from mothers 46
- Human sperm contain 23 chromosomes from dad’s 46
- Offspring has 23 pairs
2
Q
Sex Chromosomes
A
-Males: XY chromosomes
X from mom, Y from dad
-Females: XX chromosomes
X from mom, X from dad
3
Q
Androgen Insensitivity Syndrome
A
- Partial
- Complete
4
Q
Partial Androgen Insensitivity Syndrome (PAIS)
A
- Individual develops as male but w/ reduced masculinization
- Possibly under development of male primary sex characteristics and/or partial development of female secondary sex characteristics
5
Q
Complete Androgen Insensitivity Syndrome (CAIS)
A
- Can easily go unnoticed into young adulthood
- Individual develops as female externally
- Very little body hair
- Considered attractive
- Unable to become pregnant
6
Q
Behavioral Genetics
A
- Studies the inheritance of behavioral and psychological traits
- Complex, because most traits are result of many genes instead of only one gene or alleles pair
7
Q
Polygenetic Inheritance
A
-When many genes affect the phenotype of a physical, psychological, or behavioral trait
8
Q
Heritability Coefficient
A
-Difference between two correlations concerning scores on a trait
9
Q
Weeks of the Zygote
A
-Weeks 1-2
10
Q
Weeks of the Embryo
A
-Weeks 3-8
11
Q
Weeks of the Fetus
A
-Weeks 9-birth
12
Q
Period of the Zygote
A
- Weeks 1-2
- Zygote travels down fallopian tube and is implanted in uterine wall after fert.
- Implantation triggers hormonal changes to prevent menstruation
- Center of zygote contains germ disc
- Other cells form placenta, which supports baby’s development
13
Q
Germ Disc
A
Cells that develop into a baby
14
Q
Period of the Embryo
A
- Weeks 3-8
- Body structures, internal organs, and the three layers of the embryo develop
- Amniotic sac fills with fluid and the umbillical cord connects the embryo to the placenta
- Umbillical cord’s blood vessels join placenta to the embryo
15
Q
Three layers of the embryo
A
- Ectoderm
- Mesoderm
- Endoderm
