genome structure and genomic variations

Question 1

human genome contains how many chromosomes?

Answer 1

24 (22 auto, 2 sex)

Question 2

intergenic regions are composed of?

Answer 2

noncoding DNA

Question 3

intergenic regions function to?

Answer 3

direct assembly of specific chromatin structures and contribute to regulation of nearby genes

Question 4

single nucleotide polymorphisms (SNPs) are variation once in every?

Answer 4

1,000 base pairs in the human genome and are essentially mutations

Question 5

SNPs occur most frequently in?

Answer 5

noncoding regions of the genome

Question 6

SNPs lead to specific?

Answer 6

traits and phenotypes

*PTC taste sensitivity

Question 7

copy-number variation (CNVs) are?

Answer 7

structural variations in the genome that lead to different copies of certain sections of DNA, due to replication or deletions of large regions of the genome

Question 8

tandem repeats are when the genome has?

Answer 8

short sequences of nucleotides are repeated one right after the other (from three to over 100 times)

Question 9

unstable tandem repeats can lead to?

Answer 9

chromosome breaks and some implicate disease