18 - Introduction to Genetics Flashcards
1
Q
Number of base pairs in human genome
A
~3 billion
2
Q
Number of genes in mitochondrial genome
A
13 protein coding genes
24 RNA coding genes
3
Q
Post-ENCODE definition of a gene
A
A union of genomic sequences encoding a coherent set of
potentially overlapping functional products
4
Q
Number of different proteins in human body
A
Over 1 million
5
Q
Number of different mRNAs in humans
A
~100,000
6
Q
Number of protein-coding genes in human
A
~21,000
7
Q
Possible genetic variants
1)
2)
3)
A
1) Gross chromosomal changes
2) Copy number variations
3) Changes to DNA sequence
8
Q
Proportion of genome shared between generations
A
Each level of generation different halves percentage of genome shared.
EG: siblings share 1/2, parents 1/4, grandparents 1/8
