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7th Grade Science > Cell Division - Reproduction > Flashcards

Cell Division - Reproduction Flashcards

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Biology 101 flashcards
1
Q

a segment of DNA that carries the genetic code to make a specific polypeptide chain

A

Gene

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2
Q

separate male and female sex

A

Dioecious

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3
Q

production of offspring by two parents through the production and fertilization of gametes; produces genetically variable offspring

A

Sexual Reproduction

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4
Q

method of asexual reproduction that occurs in prokaryotic cells in which a parent cell divides into two identical daughter cells

A

Binary Fission

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5
Q

union of two gametes that produces a diploid zygote

A

Fertilization

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6
Q

happens when an unfertilized egg cell grows into a new organism

A

Parthenogenesis

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7
Q

Reproduction that involves a single parent and results in offspring that are all genetically identical to the parent

A

Asexual reproduction

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8
Q

happens when fish or other aquatic animals release their gametes in the water and the gametes combine by chance

A

External fertilization

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9
Q

very early stage in the development of an organism that lasts from fertilization to the eighth week of development in which initial growth and development take place

A

Embryo

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10
Q

one of two female reproductive organs that produces eggs and secretes the hormone estrogen

A

ovaries

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11
Q

when the male deposits sperm inside the body of the female and the gametes combine internally

A

Internal fertilization

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12
Q

glands in the endocrine system that secrete sex hormones and produce gametes; testes in males and ovaries in females

A

gonads

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13
Q

having only one chromosome of each type; gametes are haploid

A

haploid

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14
Q

one of two male reproductive organs that produces sperm and secretes testosterone

A

testes

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15
Q

referring to the total number of chromosomes in a species; having two sets of chromosomes

A

diploid

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16
Q

a body cavity with a single opening for sperm, eggs, and waste to exit and enter

A

cloaca

17
Q

the egg is fertilized by the pollen of the same flower

A

self-pollination

18
Q

male reproductive organ containing the urethra, through which semen and urine pass out of the body

A

penis

19
Q

process in which pollen grains from anthers on one plant are transferred to stigmas of flowers on another plant; can create offspring with new combination of traits

A

Cross-pollination

20
Q

fertilization in plants in which pollen is transferred to female gametes in an ovary of the same plant or a different plant of the same species

A

Pollination

21
Q

female reproductive organ that receives sperm during sexual intercourse and provides a passageway for a baby to leave the mother’s body during birth

A

Vagina

7th Grade Science (1 decks)

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