#Question id: 5736
#Unit 8. Inheritance Biology
Two zygote in which one A is 44+XYY and another B is 44+XXX karyotype is best described by
#Question id: 12529
#Unit 6. System Physiology – Plant
#Question id: 2858
#Unit 2. Cellular Organization
When lactose enters the cell, it is converted to allolactose. It is allolactose (rather than lactose itself) that controls the Lac repressor. Paradoxically, the conversion of lactose to allolactose is catalyzed by b-galactosidase, itself encoded by one of the lac genes. How is this possible? Which statement is incorrect according lac genes expressions?
#Question id: 7170
#Unit 5. Developmental Biology
Following statements
are regarding to maternally provided mRNAs—hunchback and caudal, are critical
for patterning the anterior and posterior regions of the body plan,
respectively.
A.
B. Translation of the
hunchback and caudal mRNAs is repressed by the diffusion gradients of Bicoid
and Nanos proteins, respectively.
C. Bicoid binds to a
specific region of caudal’s 3′UTR. Here, it binds Bin3, a protein that
stabilizes an inhibitory complex that prevents the binding of the mRNA 5′ cap
to the ribosome. By recruiting this translational inhibitor, Bicoid prevents
translation of caudal in the anterior of the embryo.
D.
Nanos protein prevents translation of the hunchback message. Nanos in the
posterior of the embryo forms a complex with several other ubiquitous proteins,
including Pumilio and Brat. This complex binds to the 3′UTR of the hunchback
message, where it recruits d4EHP and prevents the hunchback message from
attaching to ribosomes.
Which of the following statements are true?
#Question id: 29021
#Unit 11. Evolution and Behavior
A researcher measures mandible length of 500 individuals in a bird's species, given depicted graph of these population is represents;
