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Structure of DNA Flashcards

(14 cards)

1
Q

Chromosome

A

Structure found in the nucleus made of a long strand of DNA

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2
Q

Gene

A

Small section of DNA found on a chromosome, triplet of amino acids that code for a specific protein. Therefore, contributing to a characteristic.

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3
Q

Allele

A

Different forms of a gene - humans have two alleles for each gene they inherit, one from each parent

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4
Q

Genotype

A

Combination of alleles an individual has

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5
Q

Phenotype

A

Physical characteristics observed in an individual

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6
Q

Genome

A

Entire set of genetic material in an organism

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7
Q

Structure of a nucleotide

A

A sugar, a phosphate group (joined in a sugar-phosphate backbone), and a base

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8
Q

Name the 4 bases

A

Adenine, thymine, cytosine, guanine

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9
Q

Complementary base pairing

A

A-T, C-G

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10
Q

Structure of DNA

A

Polymer made of many repeating units, nucleotides. Made up of 2 strands coiled together in the shape of a double helix.

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11
Q

How many bases make an amino acid?

A

Three

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12
Q

Non-coding DNA

A

Parts of the DNA that do not code for proteins, instead they control whether a gene is expressed or not

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13
Q

What is DNA?

A

Deoxyribonucleic acid
- chemical that all genetic material in a cell is made up of

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14
Q

Benefits of scientists understanding the entire human genome

A
  • Able to identify genes linked to causing a disease
    -> Helps us to understand them better and find more effective cures
  • Able to trace migration patterns of human populations
    -> Able to work out when new populations split off in a different direction and what route they took, as all humans share a common ancestor from Africa
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