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swat32
2 years ago
10

In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One colle

cting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.
Biology
1 answer:
Fudgin [204]2 years ago
7 0

Complete question:

In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.

How does this study support the  concept that natural selection is not random?  

Answer:

The study supports the  concept that natural selection is not random because in different areas with the same or very similar environmental characteristics, the same phenotype was produced by different types of mutations.  

Explanation:

All of the sampled animals are inhabiting dark substrate. Probably animals needed to camouflage to survive. Natural selection must have driven them to produce dark color, similar to the substrate color. So animals from the different regions suffered different mutations that drove them to have almost the same dark fur color. The environmental condition is favoring the same phenotype.

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The illustration shows one of the ways resources are removed from the deep sea. There are many confusing regulations that limit
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However, because of the abundant presence of sea area, and the way national boundaries often conflict, coupled with the problem of illegal mining practices, such laws are difficult to enforce, and so these regulations are not standardized yet.

Some possible impacts of ilegal seabed mining are:
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6 0
2 years ago
What does a number in front of a molecular formula stand for???????
Harrizon [31]

Explanation:

The small number behind each element symbol designates the number of atoms of each element in a chemical formula. If there is no number, it is assumed there is only one of those elements. A large number designates how many units there are of that compound.

4 0
3 years ago
Read 2 more answers
Who discovered the monomers of nucleic acids? Phoebus Levene James Watson, Francis Crick, and Rosalind Franklin Friedrich Miesch
Vlad1618 [11]

Answer:

Phoebus Levene( 1896, Sagor Russia - Septemeber 1940, New York)

Explanation:

These were developed by Phoebus Aaron Theodor Levene ,he was a russian who studied medicine, with keen interest in organic chemistry.

He migrated to the US in 1891, and started practising medicine  in 1892.Due to his strong interest in research he combined research(1894) in  molecular structure of sugars with medical practice,But this was cut short when he contracted tuberculosis.

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:the isolation of D-ribose sugar from ribonucleic acid molecule.(RNA)

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8 0
3 years ago
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3 0
2 years ago
The mutual interdependence that characterizes oligopoly arises because.
densk [106]

We can confirm that the mutual interdependence that characterizes oligopoly arises because the output for a given market is being generated by a small group of companies.

<h3 /><h3>What is oligopoly?</h3>

Oligopoly is when the market for a given product is controlled by only a few of the companies that create said product. This situation can have benefits as well as drawbacks. A benefit would be increased product variation, providing more choices for consumers, while a drawback would be a lack of competition to keep prices low.

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