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3 years ago

Which characteristic of living things does a virus lack?

Biology

1 answer:

Marizza181 [45]3 years ago

7 0

Answer:

Viruses are not made of cells as a living thing is.

Explanation:

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How does the recesive sickle-cell allele stay in the gene pool

Zina [86]

Answer:

Because natural selection selects for it. Thus it persists.

Explanation:

You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.

7 0

3 years ago

Both the moon and the sun influence earth. the moon has a much greater influence though. why is that?

horrorfan [7]

I'm pretty sure its because the sun is farther away from earth so C

4 0

3 years ago

What type of vertebrae have openings in their transverse processes that guide the vertebral arteries up toward the brain?

Kaylis [27]

Answer:

Cervical vertebrae

Explanation:

The cervical vertebrae are the vertebrae present in the neck region. All cervical vertebrae are characterized by the presence of three foramina. One is the vertebral foramen and the rest two are called transverse foramina. Each transverse process of each cervical vertebrae contains a transverse foramen. The vertebral artery and the related vein and nerve fibers pass through the transverse foramina. Among the all cervical vertebrae, the transverse processes and transverse foramina of the atlas are relatively larger.

8 0

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

6 0

3 years ago

Which of the following are amniotes? O Birds, reptiles, and amphibians O Reptiles, birds, and dogs O Cnidarians, reptiles, and m

german

Answer:

reptiles, birds and animals

Explanation:

amniotes are animals whose embryo develops in an amnion and chorlion and have an allanton.

they lay their eggs on land or retain them within the mother.

4 0

3 years ago