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KengaRu [80]
3 years ago
8

Which mechanism of genetic variation results from the exchange of gene segments between non-sister chromatids?

Biology
2 answers:
otez555 [7]3 years ago
6 0
The correct answer should be "A"
elixir [45]3 years ago
3 0
The crossing over mechanism of genetic variation results from the exchange of gene segments between non sister chromatids. The correct answer is A. 
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When scientists report their results from their scientific investigations, what should scientists include and NOT include in the
Elena L [17]
<h3><u>Answer:</u></h3>

<u>When scientists report their results from their scientific investigations, scientists should include the content that answers the following questions</u>

  • Was our hypothesis correct?
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  • If the results did not support the hypothesis then add information about reason why it happened.

<u>Scientists should not include the following </u>

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6 0
3 years ago
Avery and DNA (page 289)
Ivan

Yes, Avery, Mc Leod and Mc Carty do thought that genes may be involved in the transformation of non virulent rough Strains of <em>Diplococcus pneumoniae</em> to harmful smooth strained bacteria

<h3><u>Explanation:</u></h3>

Avery was a Canadian medical researcher who along with other two well known scientists of the contemporary time went for an experiment where he took two strains of bacteria Diplococcus pneumoniae - one is rough and nonvirulent and another is smooth and virulent. For a control run, he injected both the bacteria in separate mice and the expected result was there. Now as he injected heat killed smooth bacteria, the mice survived. But as he injected heat killed smooth bacteria with rough bacteria, although there was no organism which can kill the mice the mice died. And autopsy revealed the presence of live smooth bacteria in the lungs.

Thus they suspected something have gone from the dead smooth bacteria into the non virulent rough bacteria which lead to transformation of the rough bacteria to smooth ones. Thus, the experiment was carried on, which suspected role of genes in this transformation.

5 0
3 years ago
Complete the sentence: Ecosystem distribution
Step2247 [10]

Answer:

<em>Hypotheses may vary. Most students will probably state that ecosystems at </em>

<em>high altitudes will support little vegetation. </em>

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Ecosystem distribution is different at different places. Regions at high elevations might usually have low varieties of plants and animals but it cannot be true for every ecosystem located as higher altitudes.

Some communities might be well adapted to live in the cold and hence progress rapidly.

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The energy being described is potential energy.
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Aggregate fruit is a fruit that develops from several ovaries forming one flower. An example of an aggregate fruit is a raspberry. Multiple fruit is fruit that develops from a cluster of flowers, and each flower produces a fruit, which turns into a mass of a singular fruit. An example of multiple fruit is a pineapple. Each "cube" of a pineapple is a separate fruit formed from a single flower, yet the pineapple as a whole is one mass of pineapple.

4 0
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