Structure of Genome Part 1 Flashcards
1
Q
C value
A
- amount of DNA in unreplicated haploid genome
- length in bp or meters
- mass in grams
- can be expressed in different ways
2
Q
value for genes
A
- kbp
3
Q
value for genomes
A
- Mbp or Gbp
4
Q
Tera
A
10^12
5
Q
Giga
A
10^9
6
Q
Mega
A
10^6
7
Q
pico
A
10^-12
8
Q
femto
A
10^-15
9
Q
C value for humans at 3 pg
how amount of DNA changes throughout cell cycle
A
- somatic cells are diploid - 6
- G1 - 6
- S - 6-12
- G2 - 12
- M - 12-6
10
Q
c value comparison
A
- relationship between complexity and size of organisms
11
Q
C-value paradox
A
- inability to account for the DNA content of the genomes based on complexity
12
Q
2 problems with c-value paradox
A
- C value is higher than necessary
- Large variations in C value
13
Q
C value higher than necessary
A
- most eukaryotes have more DNA than needed to code for all the proteins
14
Q
large variations in C-value
A
- for closely related organisms whose apparent complexity varies little.
15
Q
junk DNA
A
- DNA in the nucleus that has no known function
- could be involved in organizing or regulating replication of the genome
