Pedigrees, Karyotypes, Punnett Squares, and Genetic Inheritance Flashcards

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1
Q

Why is it more likely for males to have a sex-linked disease/trait

A

Because males have only one X chromosome so its more likely to get the trait than a female who has two X chromosomes.

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2
Q

Karyotype

A

an organized profile of a persons chromosomes

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3
Q

What are two things that a geneticists looks for to match up chromosomes in a karyotype?

A

Two chromosomes = specify sex

Arranged in Pairs = numbers 1-22

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4
Q

Why are some bands dark on chromosomes?

A

They are rich in base pairs Adenine and Thymine

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5
Q

47, XX, +21

A

How many chromosomes, Sex chromosomes (gender), What pair of chromosome the mutation is in

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6
Q

When chromosomes don’t separate correctly

A

nondisjunction

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7
Q

F.O.I.L

A

First, Outside, Inside, Last

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8
Q

P1

A

Parent Generation

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9
Q

F1

A

First offspring generation

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10
Q

F2

A

Second offspring generation

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11
Q

Offspring of parents with same traits

A

Purebred

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12
Q

Offspring of parents with different traits

A

Hybrid

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13
Q

Someone with the dominant allele who also carries the recessive allele.

A

Carrier

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14
Q

A number that indicates how likely an event is

A

Probability

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15
Q

What are Mendel’s principles

A

Fundamental Theory of Heredity
Principle of Dominance
Principle of Segregation
Principle of Independent Assortment

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16
Q

Incomplete Dominance

A

One allele is not completely dominant over another

RED+WHITE = PINK

17
Q

Codominance

A

Phenotypes produced by both alleles are completely expressed.
WHITE+BLACK = SPECKLED

18
Q

Traits controlled by 2 or more genes

A

Polygenic

19
Q

Sex-linked traits

A

Traits controlled by genes located on the sex chromosomes.

20
Q

Epigenetics

A

Changes in organisms caused by modification of gene expression rather than alteration of the genetic code.

21
Q

How were the genetic of some Dutch citizens affected during the Dutch Famine of 1944-1945

A

Certain genes in these people were silenced because of the famine