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Liula [17]
3 years ago
15

Which statement describes the current theory about the relationship between the human population and mass extinction? The human

population is increasing, so the likelihood of a mass extinction is also increasing. The human population is increasing, so the likelihood of a mass extinction is decreasing. The human population is decreasing, so the likelihood of a mass extinction is also decreasing. The human population is decreasing, so the likelihood of a mass extinction is increasing.
Biology
2 answers:
Flauer [41]3 years ago
5 0
<span>The human population is increasing, so the likelihood of a mass extinction is also increasing.

The human population is increasing, and historically, as human population has increased, species have gone extinct. As human population increases, and also destroy more habitats to pay for higher standards of living, the probability of mass extinction increases. </span>
Zielflug [23.3K]3 years ago
3 0

Answer:

The answer is A. The human population is increasing, so the likelihood of a mass extinction is also increasing.

Explanation:

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One gene in the human genome may be expressed at a much higher level than another. Can differences in types of cis elements pres
Oksana_A [137]

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No, CREs usually don't account for differences in gene expression levels.

Explanation:

<em>Cis</em>-regulatory elements (CREs) are non-coding DNA regions that regulate adjacent gene <em>transcription</em>. They usually do it by binding to transcription factors. They are in charge of influencing the rate of which transcription occurs, and less with how much a gene is expressed. On the other hand, trans-regulatory elements are DNA sequences that encode for upstream regulators that can modify or regulate <em>gene expression levels</em>.

Therefore, cis elements are not really in charge of expression levels, mostly transcription rates of single genes, rather. Trans elements are more involved in expression levels.

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2 years ago
A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i
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These genes could have arisen by gene duplication.

<h3>What is gene duplication?</h3>

Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.

Gene duplication is a phenomenon that can happen through a variety of ways:

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  • Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
  • Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.

Learn more about gene duplication here:

brainly.com/question/14014915

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2 years ago
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All of the living organisms have the ability to adapt.

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