Storing and using genetic information Flashcards Preview

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Flashcards in Storing and using genetic information Deck (17)
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1
Q

Phenotype

A

Outward physical manifestation of organism

2
Q

Genotype

A

Full hereditary information of organism

3
Q

DNA

A

Right handed double helix

4
Q

Nucleotide monomer

A

2- deoxyribose sugar
Base
Phosphate group

5
Q

Nucleus

A

5-10 micrometres with 1/4 RNA production

6
Q

Histone proteins

A

H1, H2a, H2b, H3, H4

7
Q

Heterochromatin

A

Condensed

8
Q

Euchromatin

A

Loose

9
Q

DNA replication is

A

Semi conservative and bi directional

10
Q

How can histones be modified to separate DNA strands?

A

Enzymatically modified

Displaced by chromatin remodelling complexes

11
Q

When are chromosomes seen easiest?

A

Metaphase

12
Q

Exons

A

Coding regions

13
Q

Introns

A

Non coding regions

14
Q

Explain the degeneracy of the genetic code

A

All amino acids except methionine and tryptophan are encoded by more than 1 codon

15
Q

mRNA

A

Transcribed from DNA in nucleus and carries information for protein synthesis

16
Q

What allows many proteins to be made?

A

Alternative splicing

Reading frame

17
Q

Where is rRNA produced?

A

Nucleus