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chubhunter [2.5K]
3 years ago
15

Why are scientists concerned about species loss even though extinction is a natural process?

Biology
2 answers:
PIT_PIT [208]3 years ago
8 0

The extinction of species is a natural process. Over the time, multiple species have become extinct. The process of natural selection ensures that only the most adapted species continue on the Earth. However, when the extinction rate increases then it causes a disbalance. The extinction of one species will cause a sudden rise in the species of its prey and this will cause a disruption. Therefore, the scientists are worried about the loss due to extinction even though it is natural.

velikii [3]3 years ago
5 0
Because, when more species start to become extinct it disrupts the balance of the earth. For instance if spiders became extinct, the numbers of insects would exponentially grow. Which will become a problem for farmers, and more diseases  would most likely  occur. 
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What aspect of chromosome behavior most clearly accounts for Mendel's law of segregation?
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The given question is incomplete as the group of choices lack the correct answer, however, the correct group of choices are as follows:

A. Movement of sister chromatids to opposite poles at anaphase II of meiosis.

B. Movement of homologous chromosomes to opposite poles at anaphase I of meiosis.

C. Crossing over between homologous chromosomes during prophase I of meiosis.

D.  Replication of chromosomes prior to meiosis.

E. Independent alignment of different homologous pairs on the metaphase I spindle.

Answer:

The correct answer is :  Movement of homologous chromosomes to opposite poles at anaphase I of meiosis.

Explanation:

The Mendel's law of segregation says that during formation of gametes the copies of genes segregate from each other so each gamete has equal and only one allele of the gene.

This behavior of homologous chromosome can be seen in anaphase I in meiosis, responsible for the segregation of copies of allele into different copies.

Thus, the correct answer is :  Movement of homologous chromosomes to opposite poles at anaphase I of meiosis.

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Explanation:

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