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Year 9 Biology > Genetic Crosses > Flashcards

Genetic Crosses Flashcards

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1
Q

RRxRR (do in goodnotes)

A

Offspring:
100% R
Dominant

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2
Q

RrxRR (do in goodnotes)

A

Offspring:
Dominant
100% R

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3
Q

RRxRr (do in goodnotes)

A

Offspring:
Dominant
100% R

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4
Q

Rrxrr (do in goodnotes)

A

Offspring:
50% R
50% r

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5
Q

rrxRr (do in goodnotes)

A

Offspring
50% R
50% r
1:1

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6
Q

rrxrr (do in goodnotes)

A

Offspring:
100% r
Recessivw

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7
Q

RrxRr

A

Offspring:
75% R
25% r
3:1

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8
Q

What comes first when doing a punnet square method?

A

Parents phenotypes

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9
Q

What is an example of the parents phenotype

A

Straight Curly

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10
Q

What comes second when doing a punnet square method?

A

Parents genotypes

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11
Q

What is an example of the parents genotypes?

A

RR. X. rr

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12
Q

What comes third when doing a punnet square method?

A

The gametes

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13
Q

What is the Gametes? (easy)

A

The parents genotype but broken down
RR = R. R
rr = r r

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14
Q

What is a Gamete

A

The sex cells

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15
Q

What comes forth when doing a punnet sqaure method?

A

The genetic cross (the punett square)

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16
Q

What comes fifth when doing a punnet sqaure method?

A

Offspring phenotype

17
Q

What is the offspring phenotype?

A

The parents phenotypes results from the punett square

18
Q

What is an example of a offspring phenotype?

A

RR x rr
Straight, straight, curly, curly

19
Q

What comes sixth when doing a punnet sqaure method?

A

Offspring genotype

20
Q

What is the offspring genotype?

A

The results from the punnet square in genotype form

21
Q

Example of offspring genotype

A

RR, RR, rr, rr

22
Q

What comes seventh when doing a punnet sqaure method?

A

The probabilities

23
Q

What would the probability percentage be for RRxrr?

A

100% R
0% r

24
Q

What would the probability ratio be for RRxrr?

A

1

25
Q

Which allele will always be expressed?

A

The Dominant Allele

Year 9 Biology (9 decks)

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