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emmainna [20.7K]
3 years ago
12

Which factors affect natural selection?

Biology
2 answers:
soldi70 [24.7K]3 years ago
6 0
The answer is the second choice: variation, overpopulation, adaptation
stealth61 [152]3 years ago
3 0

Answer: B. variation, overpopulation, adaptation

Explanation: Edge 2021

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Describe how cancers grow.
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Chromosomes other than sex chromosomes are known as______? A.genes B.protines C.autosomes D.alleles
Ilya [14]

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C autosomes

Explanation:

the remaining chromosomes are known as autosomes

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Which of the following best explains what would happen if there were no autotrophs in an ecosystem? (1 point) They are the first
kogti [31]

Answer:

They are the first trophic level in an ecosystem and without them the rest of the organisms in the ecosystem would have no source of energy

Explanation:

The autotrophs are the producers in the ecosystem. They manage to produce food for themselves, and they represent the first trophic level, thus they are the basis of any ecosystem. These organisms are the once that produce the energy, and the organisms in the trophic levels above them use their energy to survive. If the autotrophs are removed from and ecosystem, the ecosystem will collapse, as there will be no source of energy for the organisms in the trophic levels above, thus all of them will die out quickly.

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3 years ago
DNA is transcribed to messenger RNA (mRNA), and the mRNA is translated to proteins on the ribosomes. A sequence of three nucleot
Maru [420]

Answer:

start codon - AUG

in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU

stop codon - UAA, UAG, UGA

Explanation:

From the amino acid chart, the start codon is represented by the codon AUG which also code for the amino acid methionine. There are three stop codons including UAA, UAG, and UGA. The stop codons signal the end of the translation process of the mRNA. Every other codon within the mRNA chain codes for different amino acids except methionine.

Hence, using the attached amino acid chart:

start codon - AUG

in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU

stop codon - UAA, UAG, UGA

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Cells for sexual reproduction is it mitosis or meiosis
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