Meiosis Vocabulary

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Biology

9th

25 Terms

1

Gestation Period

time between fertilization and birth of an organism

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2

Amniocentesis

test to know if there is something wrong with the baby

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3

Autosomes

any of the numbered chromosomes

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4

Calyx

sepals

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5

Cancer

uncontrolled cell growth

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6

Corolla

petals

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7

Homologous

having the same relative position, value, or structure

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8

Ovary

One pair of female glands in which the eggs form and the female hormones estrogen and progesterone are made

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9

Petals

the parts of a flower that are often conspicuously colored

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10

Klinefelter's Syndrome

extra copy of X chromosome; More feminine appearance

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11

Chromatin

uncoiled DNA

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12

Placenta previa

fertilized egg implants over the birth canal gets larger, needs more food. After birth starts to lose blood placenta comes off

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13

Ectopic Pregnancy

a pregnancy in which the fetus develops outside the uterus, typically in a Fallopian tube.

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14

Trisomy

having 3 chromosomes instead of a pair

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15

Sex Chromosomes

a type of chromosome involved in sex determination.

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16

Puberty

time of an organism's life where gametes are being made

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17

Turner's Syndrome

a condition that affects only females, results when one of the X chromosomes (sex chromosomes) is missing or partially missing

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18

Crossing-over

the exchange of genetic material between homologous chromosomes

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19

Chiasmata

site of crossin-over

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20

Freemartin

female calf of a male/female twin in cattle. She will be sterile.

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21

Pollen

a fine powder produced by certain plants when they reproduce

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22

Polar Body

eliminates unneeded DNA

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23

Placenta

an organ that connects the developing fetus to the uterine wall, thereby allowing nutrient uptake, waste elimination, and gas exchange via the mother's blood supply

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24

Uterus

organ where the body develops and grows. Placenta attaches to receive nourishment from Mom.

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25

Fallopian Tube

a connection between ovary and uterus

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