CB3 Genetics Flashcards

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1
Q

In blood groups what 2 alleles are codominant

A

Group A And B
I. I
When both alleles are present they have their own blood group AB

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2
Q

What are the 4 blood groups

A

A
B
AB
O

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3
Q

what blood group would be shown if someone had these alleles
1)A. B
I. I
2)O. O
I. I
3)A O
I. I

A

1)Group AB
2 Group O
3)Group A

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4
Q

If 2 parents one with alleles ,A. ,O. and one with group ,B. ,O what are the chances of having a child with phenotype group O

A

1in 4
25 percent

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5
Q

What is a genotype and phenotype

A

Genotype-genome that codes for a protein
Phenotype-protein that is made

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6
Q

What is a gamete and zygote

A

Gametes are sex cells like the egg cell and spleen cell a a zygote is when the 2 cells combine

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7
Q

What are 2 advantages of asexual reproduction

A

Not needing to find a mate
Rapid reproductive cycle

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8
Q

What is a disadvantage of asexual reproduction

A

No variation in population (new disease becomes present likely all species will be affected)

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9
Q

What is an advantage of sexual reproduction

A

Variation in population

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10
Q

What is a disadvantage of sexual reproduction

A

Needing to find a mate and taking lots of time and energy

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11
Q

In meiosis what is made at the end

A

4 haploid daughter cells and each with half the number of chromosomes(23)

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12
Q

Are the daughter cells of meiosis different or similar

A

They are haploid cells that are genetically different

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13
Q

What base pairs code for each other

A

A-T
C-G they are complementary to each other

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14
Q

Proteins are made of chains of what

A

Polypeptides are chains made of amino acids that fold up to make a protein

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15
Q

The bases in the dna determines the amino acid made and when they fold up a protein is made and does a specific thing

A
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16
Q

How many bases code for one amino acid

A

3 bases code for a single amino acid a triplet (codons)

17
Q

Where does transcription take place

A

In the nucleus

18
Q

In mRNA what codes for A(adenine) instead of T(thymine)

A

U(Uracil)

19
Q

Dna is double stranded and too large to fit through the nucleus so mRNA is made to get through the nucleus

A
20
Q

——- binds your a region of non-coding dna in front of a gene

A

RNA polymerase