Sunlight is the main change! sun light cannot penetrate into the deep layers of the ocean and availability of oxygen is also low there. this causes the considerable amount of organisms to live in the upper layers of the ocean and we can only observe decomposing organisms in the deeper layers!
<span>D) on a DNA strand
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Answer and Explanation: The farmer has a pure-breeding line of tomato means the farmer has a tomato with genotype FFrrtt while the other line of tomato has genotype ffRRTT.
The cross between these lines gives a F1 generation of heterozygous full, red and axial or FfRrTt.
With an individual of F1 crosses with another individual of F1, the Punnet Square will be:
FfRrTt x FfRrTt
1) Dividing each characteristics, for simplicity:
F f
F FF Ff
f Ff ff
R r
R RR Rr
r Rr rr
T t
T TT Tt
t Tt tt
Analysing Punnett squares, we notice the line wanted (ffrrTT) will be produced, when an individual of F1 generation cross with another individual with the same generation.
Destruction of the pancreatic "Beta Cells" can lead to hyperglycemia is enough of them are annihilated. This is because the beta cells of the organ the pancreas are responsible for producing the hormone insulin, whose job is to lower blood-glucose levels when they rise (as after a high-carbohydrate meal).
Without enough insulin secreted by beta cells, glucose levels will continue to rise in the blood plasma, a condition called hyperglycemia.
This is actually the main cause of insulin-dependent diabetes mellitus (IDDM, aka Type 1 Diabetes).
