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Arlecino [84]
3 years ago
6

What was Thomas Hunt Morgan's main contribution to science? He discovered that certain traits were linked to the X chromosome. H

e discovered that certain traits were linked to the Y chromosome. He created the first white-eyed female Drosophila. He created the first white-eyed male Drosophila.
Biology
2 answers:
Alja [10]3 years ago
8 0

Answer:

the answer is A

Explanation:

mixas84 [53]3 years ago
4 0

Answer:

A.) He discovered that certain traits were linked to the X chromosome.

Hope this helps!

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If one amino acid in a protein sequence is changed, what could happen?
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If one amino acid in a protein sequence is changed then normal bodily functions can change.So the answer will be B. Hope this can help a lot
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Which answer correctly summarizes the essential elements of a scientific theory?
Nana76 [90]
A scientific theory<span> is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported </span>theories<span> are not "guesses" but reliable accounts of the real world.</span>
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What defines a group of interbreeding individuals that are reproductively isolated from other such groups?
Vika [28.1K]

Answer:

Biological species.

Explanation:

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The biological species concept explains that the group of interbreeding population that has the ability to reproductively isolated from the other such group.

Thus, the correct answer is option (c).

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3 years ago
Slight rotation between the femur and tibia is possible due to the action of the ____________ muscle.
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Popliteus muscle

from: https://en.m.wikipedia.org/wiki/Popliteus_muscle
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Describe the key chromosome behaviors during mitosis.
SIZIF [17.4K]

Answer:

Explanation:

During mitosis, the chromosomes are distributed equally in the resulting chromosome. The chromosome number was doubled in the S phase of the interphase and the cell is ready for mitosis. The chromosomes are more condensed and twisted in prophase. It is also double in length. During the metaphase, the chromosomes are arranged in the metaphase plate. The microtubules from the centriole attach to the centromere of each chromosome and pull them towards the pole.  

Thus each chromatid pulls apart and migrates towards the poles. The nuclear membrane and nucleus disappear during mitosis. At the end of telophase, the daughter cells contain an equal number of chromatids as in the parent cell.  

Sometimes the microtubules of centrioles do not function properly and fail to pull the chromosomes equally to the cells. Thus one of the daughter cells contains more chromosomes and another fewer chromosomes. This occurs in anaphase. This results in the non-disjunction of chromosomes.  

Sometimes centromere splits transversely instead of longitudinal division. This results in the formation of 2 daughter chromosomes of unequal length. This is called the isochromosomes.  

The number of chromosomes distributed in the daughter cells results in a normal cell or any genetic disorder. The main function of mitosis to produce daughter cells having an equal number of chromosomes present in the parent cell.

5 0
4 years ago
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