Alleles & Inheritance Flashcards

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1
Q

What is a diploid?

A

2 sets of chromosomes

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2
Q

What do chromosomes have?

A

The same genes

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3
Q

What gender is XY?

A

MAN

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4
Q

What gender is XX?

A

WOMEN

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5
Q

What is a allele?

A

Different versions of the same gene

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6
Q

Give examples of what a allele is.

A
Gene = eye colour
Allele = blue, green, brown
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7
Q

What is a dominant allele?

A

One copy is needed

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8
Q

What is a recessive allele?

A

Two copies are needed

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9
Q

What does homozygous mean?

A

2 copies of the same allele

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10
Q

What does heterozygous mean?

A

2 different alleles

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11
Q

What are phenotypes?

A

Physical appearance / characteristics

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12
Q

What does it mean if something is a genotype?

A

Has alleles present

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13
Q

What is a mutation?

A

A change in the sequence of bases in the genetic code

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14
Q

When do mutations happen?

A

When there is a mistake in copying DNA during cell division

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