mini test 3 Flashcards

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1
Q

Mutation

A

is any change or mistake in the genes or chromosomes

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2
Q

True or False. A mutatation is always a bad thing

A

False

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3
Q

2 effects of mutation

A

can result 2 disease and lead to death. And is impossible for organisms to survive

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4
Q

Benefits of mutation

A

Gives the organisms a sudden new advantage . And contributes to genetic variations.

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5
Q

Can a mutation be tranferred to your kid if its in your skin or body cells?

A

NO

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6
Q

How can a mutation be transferred to your kid?

A

If its in your egg cells or sperm

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7
Q

What causes down syndrome?

A

Nondisjunction

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8
Q

Deletions:

A

A chromosome segment is lost

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9
Q

Translocation:

A

When A chromosome breaks off and becomes reattached to a non-homologous chromosome

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10
Q

Inversion:

A

When A chromosome segment breaks off and becomes reattached at a new point

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11
Q

Duplications:

A

a chromosomal segment repeats

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12
Q

Insertion:

A

the addition of nucleotide pairs in a gene

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13
Q

substitution

A

a mutation in which there is a letter change. such as switching a T to a C

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14
Q

Every cell in our body has 46 chromosomes with

A

the SAME DNA

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15
Q

The use of the information from a gene is called

A

GENE EXPRESSION

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16
Q

Some genes are turned on and others are

A

turned off

17
Q

why do cells have different, structures, functions, and physical characteristics?

A

because of gene expression

18
Q

Gene expression causes different medical condtions between

A

Identical twins

19
Q

What are some factors that determine gene expression?

A

Health habits and nutrition

Environmental factors