Answer:
Definition:
Biological evolution is the process through which the characteristics of organisms change over successive generations, by means of genetic variation and natural selection. It is most commonly defined as "changes in gene frequencies in populations."
A small change in genes could result in a mass epidemic. Such as the colinistists bringing yellow fever over to America.
Explanation:
Biological evolution refers to the cumulative changes that occur in a population over time. These changes are produced at the genetic level as organisms' genes mutate and/or recombine in different ways during reproduction and are passed on to future generations.
Answer:
Diffusion, osmosis and active transport are three similar chemical methods by which single molecules or very small structures are moved across membranes or relatively short distances, often within or between cells.
Explanation:
The movement of substances in and out of cells is a very important part of biology as without it no cell and so no organism could live very long. Substances can only cross the protective cell membrane by diffusion, osmosis or active transport. Mass flow only works at the organ, tissue and whole organism level.
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different alleles are being carried by individuals, for example one
allele would be a trait for having a Green eyes, or a trait for having
curly hair, or having light skin, tall, etc...
Lets say (G) green eyes , capital letter because its dominant
G would be an allele
Hope this helps! :)
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<u>Answer</u>: operator
Operons are the functioning units of a gene within a certain DNA segment. The operator within an operon represents a DNA segment to which an activated repressor protein binds to. When this occurs, the transcription is prevented.
By controlling the operon, an organism is capable of regulation the expression on various genes. This is prompted by different environmental factors.
