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Science > General-genetics > Flashcards

General-genetics Flashcards

1
Q

Complementary base pairs…

A

Adenine - thymine

Guanine - cytosine

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2
Q

In nucleotides, the base is connected to…

A

Deoxyribose sugar

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3
Q

Where does DNA replication occur?

A

In the nucleus

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4
Q

Steps of DNA replication…

A

DNA he locate unzips double helix.
DNA polymerose attaches free nucleotides to each side.
Two lots of DNA are formed.

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5
Q

IPMAT

A

Interphase, prophase, metaphase, anaphase, telophase.

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6
Q

Differences between mitosis and meiosis

A

Mitosis-2 daughter cells with 46 cs, meiosis-4 daughter cells with 23 cs
Mitosis-for growth and repair, meiosis-forms egg and sperm
Mitosis- produces genetically identical, meiosis-produces genetically unique.

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7
Q

Two types of mutations…

A

Somatic- occurs in growing cells (skin cancer)

Gametic- in maternal/paternal DNA and passed down in egg/sperm (cystic fibrosis)

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8
Q

Sex linkage

A

Faulty genes that cause a disease, located on the X chromosome.
Only girls can be carriers as there is another X chromosome to dominate, whereas boys only have one X

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9
Q

Genes…

A

Genes are sections of DNA, DNA makes up chromosomes.

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