In cell biology, the cleavage furrow is the indentation of the cell's surface that begins the progression of cleavage, by which animal and some algal cells undergo cytokinesis, the final splitting of the membrane, in the process of cell division.
A habitat, Is the physical area where an organism lives.
Solution :
Red is dominant over the white leaves and pointed is dominant over smooth.
Red = R , white = r
Pointed = P , smooth = p
Red, pointed x white,smooth ------ Parents
RRPP rrpp
RP rp ----------------- Gametes
RrPp -------- 
(red, pointed)
When this is test crossed,
RrPp x rrpp ---- test cross
Gametes → rp
RP ---------- RrPp - red, pointed - 36 parental type
Rp ---------- Rprp - red, smooth - 14 re- combination
rP ----------- rrPp - white pointed - 10 re- combination
rp ----------- rrpp - white, smooth - 40 - parental type
Total = 100
As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.
Linkage strength = percentage of crossing over = map distance between the genes.
Percentage crossing = recombination frequency = percentage of recombination.
Recombination frequency 
= 24 %
= 24 map units
The question is incomplete. The complete question is as follows:
Which of the following is not true regarding fenestrated capillaries?
A) Fenestrated capillaries in endocrine organs allow hormones rapid entry into the blood.
B) Fenestrated capillaries in the small intestine receive nutrients from digested food.
C) Fenestrated capillaries are essential for filtration of blood plasma in the kidney.
D) Fenestrated capillaries form the blood-brain barrier.
Answer:
Fenestrated capillaries form the blood-brain barrier.
Explanation:
The fenesterated capillaries are small fine thin capillaries that helps in the exchange of substances. These capillaries are mainly found in the kidney, small intestine and glands.
The fenestrted capillaries allow the exchnage of hormone in the blood and in the kidney for the filtration. The nutrients can be easily exchanged by the capillaries present in the small intestine. The blood brain barrier function is not performed by the fenesterated capillaries. They allows the rapid exchange function and not as the barrier.
Thus, the correct answer is option (D).
The answer is B, it bonds the DNA strand because it binds to the DNA strand during transcription to then separates the DNA strand afterward.
