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chapter 7 Flashcards

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Biology 101 flashcards
1
Q

passing down of traits from generation to generation

A

heredity

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2
Q

characteristics animals and plants that are coded for by dna

A

traits

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3
Q

Dna codes for

A

height, eye color, Risk of certain diseases ,Hair color, skin color, facial features

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4
Q

___________ will have similar DNA sequencing to their parents

A

Offspring

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5
Q

order the bases are in

A

sequencing

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6
Q

portions of DNA that code for protiens

A

genes

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7
Q

there are parts of DNA that dont code for protien

A

true

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8
Q

Genes can be turned on or off by certain processes

A

gene regulation

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9
Q

every cell in the body contains its entire _________

A

DNA code

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10
Q

compressed DNA wrapped around DNA called histones

A

chromosomes

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11
Q

how many chromosomes do humans have (the only exception is sperm and egg cells which have 23)

A

46

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12
Q

most traits involve more than one gene coding for something

A

true

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13
Q

location of a specific gene on the chromosome that codes for a specific trait

A

gene locus

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14
Q

are represented by lower or capitol case letters (C=dominant l=ressesive

A

alleles

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15
Q

a variation of a gene

A

alleles

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16
Q

the genetic make up for a trait

A

genotype

17
Q

physical characteristics based on genotype

A

phenotype

18
Q

tool that predicts the traits that parents pass down to their kids

A

punett square

19
Q

are dominant traits more common than common

A

no

20
Q

Homozygous

A

Two of the same alleles

21
Q

genotype ratios are different from phenotype ratios

A

true

22
Q

heterozygous

A

having 2 different alleles

23
Q

the dominant allele that is not completely expressed when the recessive allele is present

A

incomplete dominance

24
Q

alleles working together: both traits are expressed but not blended

A

Co-Dominance

25
Q

many genes involved in the expression of one trait

A

polygenic traits

26
Q

traits that are more complex than mendelian genetics

A

non-mendelian genetics

science (12 decks)

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