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lianna [129]
3 years ago
8

Stress has an effect on every system of the body. Please select the best answer from the choices provided. T F

Biology
1 answer:
Degger [83]3 years ago
5 0

Answer:

T

Explanation:

If put under stress the body systems are all effected in one way or a other

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Which of the following is an example of specific immunity?
zvonat [6]

Answer:

Immunity to Small Pox

Explanation:

Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.

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2 years ago
If 1000 f2 offspring are obtained, how many flies of each phenotype are expected?
aniked [119]
<span>In Drosophila + indicates wild-type allele for any gene, m is mahogany and e is ebony. Female parents are m+/m+ and males are +e/+e. F1 are m+/+e, all wild type. F1 females are crossed with me/me males - the test cross. Offspring will be : non recombinant m+/me, mahogany wild type or +e/me wild type ebony. OR recombinant me/me mahogany ebony or ++/++ wild type. As the two genes are 25 map units apart, the percentage of recombinants will be 25% and therefore percentage parental types will be 75%. 75% 1000 is 750. There are two parental types, so you would expect 375 of each. Therefore, you would expect 375 m+/me and 375 +e/me. 25% of 1000 is 250 split between two recombinants =125 of each. Therefore you would expect 135 me/me and 125 ++/++</span>
7 0
3 years ago
Mitosis would be used to reproduce which cells?
sertanlavr [38]

Answer:

c

Explanation:

3 0
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The scientific definition of ______ refers to changes in a species or population over time. systematics genetics evolution biolo
natita [175]

The scientific definition of evolution refers to changes in a species or population over time.

Evolution is a long-term process. It may take millions of years and several generation for an evolution to occur. The cause of evolution can be genetic as well as environmental. The evolution is a result of mutation. Evolution generally gives rise to new species, that is different from its ancestral population.

Population is a group of similar type of organisms.  These organisms live in the same habitat, require same resources and have same kind of habits. The most essential criteria that defines a population is that the organisms of a population can mate with each other and produce offspring.

To know more about evolution, here

brainly.com/question/13492988

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4 0
1 year ago
What does flora and fauna mean in terms of science?
kipiarov [429]

Answer:

Flora refers to plant life, while fauna refers to animals!

Explanation:

6 0
3 years ago
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