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guapka [62]
3 years ago
5

Discuss genetic drift and gene flow as mechanisms of evolutionary change​

Biology
1 answer:
dezoksy [38]3 years ago
8 0
Answer: Gene flow is the movement of alleles from one population to another as a result of the migration of individuals. This causes a reduction in the differences between populations. ... Genetic drift is a change in allele frequencies due to change of events in a small breeding population.
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PRETEST:
nignag [31]

Answer:

<em>The correct option is D) oxygen</em>

Explanation:

The splitting of the water molecules during the light-dependent reactions results in the production of 2 electrons, two hydrogen ions and the formation of oxygen gas. The electrons released by this process make ATP by a process which is known as chemiosmosis. The hydrogen ions released during the light-dependent reactions are converted into NADPH during the light-independent reactions. Oxygen is the by-product and is released into the air. The oxygen is used up by other organisms of the earth for cellular respiration.

6 0
3 years ago
Can you distinguish between scientific and societal laws?
lidiya [134]

Answer:

There are differences between Scientific Laws and Societal Laws. Scientific laws are based on scientific evidence that is supported by experimentation. Societal laws are based on the behavior and conduct made by society or government.

hope this helps!

Explanation:

8 0
3 years ago
Antibodies that act against a particular foreign substance are released by ________. antibodies that act against a particular fo
MissTica
The correct answer is "plasma cells". 

Plasma cells are differentiated or mature B cells capable of producing antibodies against a particular foreign substance. B cells are stimulated to differentiate into plasma cells when it binds to two receptors of helper T cell; having the T cells "help" the B cells to differentiate to plasma cells. These T cells have the antigenic information passed to them by antigen presenting cells such as dendritic cells and these will be passed to the B cells and plasma cells will produce antibodies against this specific antigen.
4 0
3 years ago
Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. If two
andrew11 [14]
The correct answer is B. The parents are heterozygous with polka-dot tails, so they both have Pp genotype. The combination of their genotypes (Pp x Pp) could produce 4 genotypes PP, Pp, Pp and pp. Therefore, there is 25% chance for a PP genotype, 25% for a pp genotype and 50% for a Pp genotype. The PP and Pp genotypes produce a polka-dot tail phenotype and the pp genotype produces a solid coloured tail phenotype. In conclusion, there is 75% chance for a polka-dot tail (25% for a PP + 50% for a Pp) and a 25% for a solid coloured tail phenotype (25% for a pp).
3 0
3 years ago
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Cell walls and chloroplasts are structures present in plant cells but not animal cells

6 0
3 years ago
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