7.6 Gene Organization

Question 1

human genome project

Answer 1

joint government and private sector research project that sequenced human genome; determine sequence of e million base pairs that make human genome

Question 2

eukaryotic genome composed of?

Answer 2

non coding and coding regions
- coding sequence = 2% of genome
- introns = 24%
- DNA = 75%
- non function repeated sequence = 50% of genome

Question 3

variable number tandem repeats

Answer 3

non coding repeating sequences of DNA that vary in length between homologous chromosomes and individuals

Question 4

long repetitive non coding sequences used as?

Answer 4

defence mechanism against shortfalls of DNA replication

Question 5

LINES (long interspersed nuclear element)

Answer 5

repetitive DNA sequences, 6500 bp in length, interpreted throughout genome

Question 6

SINES

Answer 6

repetitive DNA sequences; 500 bp, interspersed throughout genome

Question 7

transposons

Answer 7

small segment of DNA that can move to different positions of genome

Question 8

pseudogene

Answer 8

sequence of DNA similar to existing gene but does not code for proteins