Answer:
a. The operon is under positive control
a.) Loss of enzyme synthesis results from loss of regulatory R gene product which is regulated in the presence of Tis ophane for transcription. Absence of (Tis), transcription is positively controlled by regulatory Rprotein
b.) The proposed model reveals Tis / B complex prevents Tis enzymes from undergoing transcription through the RB operator by binding to the B region
the role of the R protein is
-decrease affinity of Tis / B complex to B region of RB
-bind to the R region on RB
- change the conformation of B region
- yield decreased affinity of Tis / B complex when R gene is lacking preventing transcription in the process
Effects of the RB mutations is that R protein will not bind to Tis / B complex to reduce transcription
Answer:
B. Loss of Habitat
Explanation:
All other answers would encourage them to populate.
LH and FSH by posterior pituitary while act on mature follicles to undergo ovulation. Estrogen and progesterone by ovaries and act on many things.
<span>Some of the first animals to develop an endoskeleton were: echinoderms.</span>
You could say the three hyenas who were (shenzi, Banzai, and Ed) were the heterotrophs in the lion king ..... heterotrophs are organisms that get there food from other organisms meaning they don't make there own food.....
