genetics Flashcards

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1
Q

carriers

A

a person or other organism that inherits a recessive allele for a genetic trait or mutation but doesn’t show the trait or show symptoms of the disease.

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2
Q

sex-linked traits

A

sex-linked traits are traits that are associated with genes found on sex chromosomes.

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3
Q

polygenic traits

A

trait controlled by two or more genes

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4
Q

multiple alleles

A

three or more alleles of the same gene

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5
Q

codominance

A

when both alleles of a gene contributes the phenotype of the organism ( a roan cow)

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6
Q

incomplete dominance

A

when one allele is not completely dominant over another (mix of both parents)

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7
Q

f1 v f2 generation

why is it important

A

f1- our parents
f2- me and my siblings
It is important because a recessive allele is gonna skip a generation and a dominant allele is in every generation.

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8
Q

genotype vs phenotype

A

a genotype is the numbers or gene combination an organism has. a phenotype is the physical characteristic of an organism/the way they look

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9
Q

homozygous vs heterozygous

A

homo- two identical alleles for a particular trait

hetero- two different alleles for the same trait

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10
Q

mendels 3 laws

A
  1. law of independent assortment: separate traits are separately inherited
  2. law of dominance: there is dominant and recessive trait
  3. law of segregation: everyone has 2 alleles for every trait and these trait segregate randomly during meiosis
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11
Q

why were pea plants a good choice?

A

they are easy to grow and easy to raise, and they have many visible characteristics.

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12
Q

gene vs trait vs allele

A
trait= a specific characteristic that varies from one individual to another
gene=  a sequence of DNA that codes for a protein thus determines a trait
allele= are the different possibilities for a given trait
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