Development: Prenatal Development

Question 1

the female sex cell, or egg

Answer 1

Ovum

Question 2

the union of the ovum and sperm

Answer 2

Fertilization

Question 3

cell resulting from the uniting of the ovum and sperm

Answer 3

Zygote

Question 4

identical twins formed when one zygote splits into two separate masses of cells, each of which develops into a separate embryo

Answer 4

Monozygotic Twins

Question 5

often called fraternal twins, occurring when two individual eggs get fertilized by separate sperm, resulting in two zygotes in the uterus at the same time

Answer 5

Dizygotic Twins

Question 6

the study of ethical and moral issues brought about by new advances in biology and medicine

Answer 6

Bioethics

Question 7

first 2 weeks after fertilization,
during which the zygote moves down to the uterus and begins to implant in the lining

Answer 7

Germinal Period

Question 8

name for the developing organism from 2 to 8 weeks after fertilization

Answer 8

Embryo

Question 9

the period from 2 to 8 weeks after fertilization, during which the major organs and structures of the organism develop

Answer 9

Embryonic Period

Question 10

times during which certain environmental influences can have an impact on the development of the infant

Answer 10

Critical Periods

Question 11

any factor that can cause a birth defect

Answer 11

Teratogen

Question 12

the physical and mental defects caused by consumption of alcohol during pregnancy

Answer 12

Fetal Alcohol Spectrum Disorder (FASD)

Question 13

the time from about 8 weeks after conception until the birth of the baby

Answer 13

Fetal Period

Question 14

name for the developing organism from 8 weeks after fertilization to the birth of the baby

Answer 14

Fetus