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Human Reproduction And Genetics > Genetics > Flashcards

Genetics Flashcards

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Biology 101 flashcards
1
Q

Genetics

A

Genetics is the study of inheritance of characteristics

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2
Q

Inheritable characteristics

A

Inheritable characteristics many physical characteristics such as eye colour and shape of ears were inherited from your parents.

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3
Q

Chromosomes

A

Chromosomes the nucleus of each sex cell (gamete ) contains 23 thread like structures called chromosomes

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4
Q

Genes

A

Genes are chemicals found on chromosomes that pass on information from parents to children

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5
Q

Dna

A

DNA Deoxyribonucleic acid

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6
Q

Chromosomes are made of

A

Chromosomes are made of protein + DNA. These chromosomes carry genes

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7
Q

46 chromosomes

A

46 chromosomes when an egg and sperm cell fuse ( each has 23 chromosomes) they give the individual they are creating 46 chromosomes.

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8
Q

Homozygous

A

The presence of two identical alleles at a particular gene locus.

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9
Q

Heterozygous

A

Being homozygous for a particular gene means you inherited two identical versions.

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10
Q

Recessive

A

relating to or denoting heritable characteristics controlled by genes which are expressed in a offspring only when inherited from both parents.

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11
Q

Dominant

A

a dominant trait or gene.

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12
Q

Biodiversity

A

Biodiversity there are many different types of living things

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13
Q

Fossils

A

Fossils the remains of very ancient living things

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14
Q

Extinct

A

Extinct some living things disappear

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15
Q

Natural selection

A

Natural selection how the variety of living things may have arisen,the most widely accepted explanation based on evidence is the theory of evolution by natural selection.

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16
Q

Species

A

Species a group of living things that can reproduce together to produce offspring which themselves can reproduce

17
Q

Mutation

A

Mutation a change in a gene

18
Q

Evolution

A

Evolution the process by which different kinds of living things develop from earlier forms by genetic changes over long periods of time

19
Q

Adaptation

A

Adaptation a characteristic that helps an organism to survive and reproduce

Human Reproduction And Genetics (2 decks)

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