Lecture 4 Flashcards

1
Q

if traits are independent then we

A

multiply

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2
Q

What is CODIS

A

a location for STR for DNA analysis

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3
Q

What is the limit for recombination

A

it is 50%

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4
Q

what is linkage disequilibrium

A

2 loci acting like they are linked when they are not

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5
Q

what is the bigger reasons for linkage disequilibrium

A

admixture - where two population that are completely different being combined

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6
Q

what happens in admixture

A

where alleles act linked when introduced to a new population

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7
Q

does it take one generation to unlink admixture?

A

no it takes multiple generations

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8
Q

fixation index is

A

F

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9
Q

homozygosity is

A

f

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10
Q

what can be a reason for your DNA being similar to a random persons

A

IVF

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11
Q

what does inbreeding affect

A

phenotypic and naturel selection consequences

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12
Q

what is the number of ancestors formula

A

2^n

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13
Q

is the number of ancestors formula realistics

A

no there is probably inbreeding

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14
Q

what does inbreeding directly cahnge

A

it changes the genotypic proportions NOT FREQUENCY

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15
Q

as the generation go by what happens to the proportions

A

homos get more and hetero gets less

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16
Q

inbreeding is also known as

A

positive assortment

17
Q

gene from different ancestors is

A

allozygous

18
Q

gene from same ancestors is

A

autozygous

19
Q

so autozygosity is

A

inbreeding which is f

20
Q

what is the best way to seen inbreeding

A

a pedigree

21
Q

what happened to king charles the second

A

due to inbreeding he has 2 genetic disorders (pituitary hormone deficiency and renal tubular acidosis, impotent)

22
Q

inbreeding increases homozygosity in

A

a population

23
Q

what is degrees of relatedness

A

expected proportions of alleles that are IBD