Explain the difference between each of the following substitution mutations:

1 answer:

5 0

Answer: silent mutation: a nucleotide base in a codon is replaced with a different base BUT the resulting amino acid isn’t affected.

Missense mutation: similar to a silent mutation, the only difference is that the switch of the nucleotide DOES result in a DIFFERENT amino acid

Nonsense mutation: a nucleotide base is changed, but that change results in a premature stop of translation

(Remember that after transcription, you are left with a strand of mRNA that Is then translated into a protein. The mRNA is read in increments of three nucleotide bases (A,U,G, or C) which is called a codon. That codon makes a single amino acid, and a strand of amino acids makes a protein)

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Archaebacteria look much alike organisms from what other kingdom due to their similar shapes?

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Archaebacteria are very similar to Bacteria with respect to their cell size,prokaryotic organisation,circular DNA etc.
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Is it first?

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Symbiotic relationships may evolve ?

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Answer:

the last answer

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over time by co-evolution of adaptations that reduce the harm or improve the benefit of the relationship

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Which of the following is false of the integumentary system?

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Answer:

Hey there the answer would be D. Keratin is the pigment responsable for skin color.

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A. The top layer of the epidermus is made of dead skin cells. The inner player has to be constatnly making more cells

B.The body procudes more melanin with stronger sunlight exposure. This results because the UV of the sun causes T-T dimers which is a type of DNA damage.

C. UV causes genetic mutation which can result in cancer if not fixed by the cell

D.Keratin is found in the epidermis and with thick layer of skin found in the hands and feet. Melainin is responsible for skin color.

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