#Question id: 33328
#Unit 2. Cellular Organization
#Question id: 2646
#Unit 2. Cellular Organization
How many stem loop structures play important role in complete system of tryptophan gene regulation?
#Question id: 5221
#Unit 11. Evolution and Behavior
Unequal crossing over during Prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?
#Question id: 11824
#Unit 6. System Physiology – Plant
Only two of the ethylene receptors in Arabidopsis have intrinsic histidine kinase activity, these receptors are_______
#Question id: 2877
#Unit 2. Cellular Organization
What is the superhelical density of a closed-circular DNA with a length of 4,200 bp and a linking number (Lk) of 374? What is the superhelical density of the same DNA when Lk = 412? Are these molecules negatively or positively supercoiled?
A. The molecule is getting negatively supercoiled.
B. The molecule is getting positively supercoiled.
C. The superhelical density is positive.
D. The superhelical density is negative.
Which of the combinations of the above statements are correct?