PART 3. FORMING A NEW LIFE Flashcards Preview

Developmental Psychology > PART 3. FORMING A NEW LIFE > Flashcards

Flashcards in PART 3. FORMING A NEW LIFE Deck (93)
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1

time period when conception is possible

fertile window

2

also known as conception; when ovum and sperm combine to make a zygote

fertilization

3

a one-celled organism that is formed through fertilization

zygote

4

once every 28 days; characterized by the rupture of a mature follicle in either ovary and expulsion of its ovum

ovulation

5

result of 2 separate eggs being fertilized by 2 different sperm to form 2 unique individuals

dizygotic twins or fraternal twins

6

result from cleaving of one fertilized egg and are generally identical

monozygotic twins or identical twins

7

genetic transmission of heritable characteristics from parents to offspring

heredity

8

chemical that carries inherited instructions for the development of all cellular forms of life

deoxyribonucleic acid (DNA)

9

4 main nucleobases of DNA and RNA

Guanine
Cytosine
Adenine
Thymine

10

If RNA, adenine bonds with?

Uracil

11

True or False. A child's sex is determined by a father's sperm.

True

12

Sequence of bases within the DNA molecule which governs the formation of proteins that determine the structure and functioning of living cells.

genetic code

13

coils of DNA that consists of genes

chromosomes

14

smallest unit of heredity

genes

15

complete sequence of genes in the human body

human genome

16

permanent alterations in genes or chromosomes that may produce harmful characteristics

mutation

17

chromosomes that are not related to sexual expression

autosomes

18

it is the 23rd pair that governs the baby's sex

sex chromosome

19

the gene for maleness

SRY gene

20

alternative forms of a gene that occupy the same position on paired chromosomes and affect the same trait

alleles

21

2 identical alleles for a trait

homozygous

22

2 different alleles for a trait

heterozygous

23

when a child receives different alleles, only the dominant one is shown

dominant inheritance

24

when a child receives identical pair of recessive alleles

recessive inheritance

25

multiple genes at different sites on chromosomes affect a complex trait

polygenic inheritance

26

observable characteristics

phenotype

27

genetic makeup of a person, containing both expressed and suppressed characteristics

genotype

28

combination of genetic and environmental factors to produce certain complex traits

multiple transmission

29

mechanism that turns genes on or off and determines functions of body cells

epigenesis

30

child receives 2 different alleles, resulting in partial expression of a trait

incomplete dominance