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ankoles [38]
3 years ago
14

A spindle fiber is a specialized form of

Biology
1 answer:
Norma-Jean [14]3 years ago
8 0
<span>A spindle fiber is a specialized form of microtubule </span><span><span>
</span></span>
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A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 5 million years. How many years
zubka84 [21]

Answer:

20 million years

Explanation:

If we have a neutral mutation rate of one mutation per 5 million years, then the total of eight mutation between the two different species would be 20 million years. This is because both species will have 4 mutations in those 20 million years, so combined, both by 4, will have 8 mutations between them. So few mutations on so much time will result in two species that are very similar to each other even after 20 million years of evolution, even making them hardly distinguishable, especially if it comes to defining fossil records from them both. A nice example of this are the members of the felidae (cat) family, which are all very closely related, and are almost identical, thus making it extremely hard to distinguish two species of the same or similar size by their fossils.

7 0
3 years ago
Insects have three pairs of legs or are ________ arthropods
AleksAgata [21]
Answer is thorax...

Hope it helps you...
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2 years ago
Which statement best describes the phases of the Moon?
Deffense [45]

Answer:

During the waning phase of the Moon, less of the Moon's near side is lít each night

Explanation:

Phases of the moon are different ways the moon appear on the Earth. As moon orbit the Earth, half of the moon that faces the Earth will be lit up. There are different phases of moon which are full moon, quarter moon, waning crescent moon, waning gibbous moon, e.t.c.

A waxing crescent moon is when the moon look like crescent and it increases in size.

A waning gibbous moon occurs when more than half of the lit portion of the Moon can be seen and the shape reduce in size . It occur between the full and quarter moon.

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3 years ago
Researchers are studying lichens growing on trees in a forest
vesna_86 [32]

Answer:

The answer is A. Most lichen species are unaffected by the forest fire

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In the eastern region of the former Soviet Union, a railroad was built on the tundra. The surface soil was dug up and tracks wer
Dafna11 [192]
<span>When the surface layer was dug up, the permafrost was exposed. When the weather warmed, this exposed permafrost would have melted and become soggy, causing the ground underneath the tracks to shift.</span>
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