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Biology > Genetics > Flashcards

Genetics Flashcards

1
Q

Who is the father of genetics?

A

Gregor Mendel

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2
Q

What is TT

A

Homozygous Dominant

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3
Q

What is Tt

A

Heterozygous

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4
Q

What is tt

A

Homozygous Recessive

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5
Q

What does heterozygous mean?

A

Different

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6
Q

What does homozygous mean?

A

Same

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7
Q

What is a punnet square?

A

Diagram used to predict the offspring by crossing the parent’s genetics.

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8
Q

Cross homozygous dominant and heterozygous

A

BB- 50% 2
Bb- 50% 2
bb- 0% 0

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9
Q

Cross heterozygous and heterozygous

A

BB- 25% 1
Bb- 50% 2
bb- 25% 1

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10
Q

Passing of genetic traits from parent to offspring

A

Hereditary

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11
Q

Science of heredity and the mechanisms of which are passed from parent to offspring

A

Genetics

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12
Q

Phenotype

A

The physical appearance of an organism

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13
Q

Genotype

A

Genetic makeup, the combination of alleles

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14
Q

What are sex chromosomes?

A

X and Y

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15
Q

Female is:

A

XX

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16
Q

Male is:

A

XY

17
Q

Which parent determines the sex of the offspring

A

Father, because he has both alleles, it depends which one he passes on

18
Q

How does a person get down syndrome?

A

The person would have three chromosomes in the 21 chromosome pair

19
Q

If both parents have cystic fibrosis, what are the chances of the child having it?

A

25%

20
Q

What is a karyotype?

A

Organized profile of someones chromosomes

21
Q

What is the normal number of chromosomes in a person?

A

46

22
Q

How many chromosomes does a person have with trisomy?

A

47

23
Q

Where is hereditary information stored?

A

Chromosomes

24
Q

Describe Meiosis

A

Reduces chromosome number by half, produces haploid gametes

25
Q

List the stages of meiosis

A

(Interphase) Meiosis 1 and Meiosis 2

Biology (4 decks)

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