Answer:
D
Explanation:
The model cannot explain why planets appear to go backward
Pyramid of
Productivity
pyramid of
productivity shows that productivity (total net biomass production) is highest
at the bottom, or first, trophic level, and decrease dramatically as you move
up through the higher trophic levels. At
higher levels, many food chains merge. Also, all food chains end up going into
the decomposer food chain eventually. Most organisms eat more than one type of
food, and many are represented at different trophic levels in different food
chains. So the idea of a food chain is a little over- simplifying food chain -
graph of whom eats whom, how each level gets energy. Written specific to
particular environments and particular communities
Geographic isolation occurs when members of a population are physically separated due to change in a habitat.
Direct repair is mutation repair that does NOT involve the removing and repairing of nucleotides
A mutation in biology is an adjustment to the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA. DNA or RNA can be found in the viral genome. Since mutation results in a new DNA sequence for a particular gene, resulting in a new allele, it is crucial as the initial stage of evolution. Through intragenic recombination, recombination can also produce a new DNA sequence (a new allele) for a particular gene.
DNA proofreading and repair systems often identify mutations and mutation repair. The cell will also go through programmed cell death (apoptosis), which prevents the flawed DNA from being passed on if the damage cannot be repaired. Only when these systems are compromised do mutations take place and are transmitted to daughter cells.
What kind of mutation repair does NOT involve the removing and repairing of nucleotides?
a. mismatch repair
b. base-excision repair
c. direct repair
d. None of the above, because all repair involves the removing of mutated nucleotides.
To know more about mutation refer to: brainly.com/question/7488281
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