Regulating Gene Expression

Question 1

protein coding sequences make up — % of the genome.

a. 20
b. 80
c. 0.5
d. 1.5

Answer 1

d. 1.5% of genome

Question 2

our nuclear genome is supplemented by the [….] genome which codes for 13 protein coding genes and 24 RNA coding genes.

Answer 2

mitochondrial

Question 3

euchromatin shows up as […] bands with giemsa stain, is rich in [….and…] nucleotides, and replicates in […..] phase of mitosis. Composed of 80% active genes.

heterochromatin shows up as […] bands with giemsa stain, is rich in [….and…] nucleotides, and replicates in […..] phase of mitosis. Has relatively few active genes!

Answer 3

light band,
G and C nucleotides.
early S-phase

dark bands
A and T nucleotides
late S phase

Question 4

house keeping genes are associated with […] expression, as opposed to regulated expression which is tightly controlled in response to signalling.

Answer 4

constitutive

Question 5

what is a spliceosome

Answer 5

large ribonucleoprotein complex that splices primary transcripts to remove introns

Question 6

gene expression requires an [….] conformation of chromatin. DNA acetylation is associated with the [….] conformation and DNA methylation is associated with the [….] conformation.

Answer 6

open
open
closed.