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lapo4ka [179]
2 years ago
7

What must have been present for life to begin the process of evolution by Natural Selection?

Biology
1 answer:
TEA [102]2 years ago
5 0

A population of organisms must exist. There must be variation among the members of the population. There must be a mechanism by which some members of the population can produce more offspring than other members. There must be a mechanism by which the variation among members of the population is passed on to their offspring.

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Which two processes does this diagram most directly models?
svet-max [94.6K]

The correct answer is D. Homeostasis and transport of molecules

Explanation:

The diagram presented shows the movement of glucose from outside the cell to inside it. Also, this diagram illustrates this process occurs through the cell membrane and there is a higher concentration outside the cell.

This complex process illustrates the transport of molecules in the cell, which refers to a mechanism that allows molecules and substances to move in and out of a cell. Moreover, this process implies molecules (in this case glucose) move to one area with a lower concentration to preserve equilibrium as shown by the diagram. Additionally, this equilibrium is part of homeostasis which is a set of mechanisms to main an equilibrium in the cell, including appropriate levels of glucose and other substances.

3 0
3 years ago
in a 3-point cross, crossovers that occur during the formation of which gametes can be scored using the phenotype of f2 progeny?
JulsSmile [24]

In gametes generated by F1 tri-hybrids and gametes produced by parents from true-breeding populations.

When non-sister chromatids of homologous chromosomes exchange genetic material during meiosis, novel allelic combinations are created in the daughter cells. The locations of three genes in the genome of an organism are identified using a three-point cross. A homozygous recessive individual is crossed with a person who is heterozygous for three mutations, and the progeny's phenotypes are graded. When F1 progeny are self-pollinated, a 3:1 ratio of F2 progeny are created.

To konw more about homologous chromosomes please click on the link brainly.com/question/27258467

#SPJ4

7 0
1 year ago
How does energy flow in an ecosystem
irakobra [83]

Answer:

  • Energy is passed from organisms at one trophic level or energy level to organisms in the next trophic level. Producers are always the first trophic level, herbivores the second, the carnivores that eat herbivores the third, and so on.

<h2>Hope this helps you !! </h2>

3 0
2 years ago
A population with an j-shaped growth curve is said to exhibit _____________ growth.
Sedbober [7]
Exponential growth, because of the shape of the curve.
3 0
3 years ago
Read 2 more answers
The Florida Panther is the brown and gray species the puma family. For years a small population of the panther lived in the wood
Tasya [4]

The correct answer is - a. It will reduce genetic diversity.

The pumas that live in Florida, also known as the Florida Panthers, will have a much reduced genetic diversity. The reason for this is that the population is very small. It also lives in the same area, where the living conditions are the same. The genetic pool is very small, and the breeding is going on between individuals that have the same traits, and are also relatively closely related, as the mating occurs between the second or third generation that came out form the same parents. That will result in a very reduced genetic diversity, so the Florida Panther will remain the same if the conditions do not change drastically, or these an invasion of pumas from the west into their territory.

3 0
3 years ago
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