Gene and genetic code Flashcards

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1
Q

Gene is a segment of ____ which contains the information to synthesize the ___________

A

DNA
Protein

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2
Q

Gene is the basic unit of _____________ material

A

hereditary

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3
Q

different genes have different __________ sequences.

A

base

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4
Q

Gene gives what 3 characteristics to protein?

A

Polypeptide chain length
sequence of amino acid
amino acid required to synthesize protein

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5
Q

Each amino acid is coded by ________ of base pairs

A

triplet

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6
Q

triplets of bases on the mRNA which incodes one Amino Acid is called as

A

Codon

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7
Q

how many Codons are there? from which ____ are to synthesize amino acids while ___ of them are known as ______________.

A

64
61
3
stop Codon

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8
Q

_____ number of codons are present for a single Amino acid.

A

6

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9
Q

the codon for Isoleucine is?

A

AUC

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10
Q

Transcription is the process of copying a segment of DNA into ______.

A

RNA

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11
Q

Which part of DNA is transcribed during transcription?

A

only the selected gene portion.

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12
Q

Transcription occurs only when it is ______.

A

required

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13
Q

How many strands of DNA are copied during transcription?

A

Only one strand.

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14
Q

The DNA strand that contains the exact information for protein synthesis is called the ______ strand or ______ strand.

A

anti sense
template

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15
Q

The opposite DNA strand, which is not directly used for transcription, is called the ______ strand or ______ strand.

A

coding
sense

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16
Q

In which direction does RNA polymerase synthesize RNA?

A

5 to 3 prime

17
Q

If a DNA sequence codes for keratin protein, this sequence will be found on the ______ strand, not the other strand.

A

template

18
Q

An example of selective transcription is when cells of a hair follicle transcribe DNA that contains genetic information about ______ synthesis.

A

keratin protein

19
Q
A