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MissTica
3 years ago
7

What contribution did Jonas Salk make to science in the 1950s?

Biology
2 answers:
victus00 [196]3 years ago
8 0
He basically made the first safe and effective vaccine for the disease Polio
Sergio039 [100]3 years ago
4 0
Jonas Salk made the Polio vaccine.
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7 0
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Use the chart above to determine which substitution mutation has the potential to cause more damage? Highlight your answer. (2pt
icang [17]

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This question is incomplete

Explanation:

This question is incomplete because of the absence of the chart referred to in the question. However, what appears to be the case is that the three nitrogenous bases represent codons (and the missing chart is the codon chart). The mutation that has the potential to cause more damage will be the one that would change the amino acid formed from the codon change.

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B. UGU to UGC: The codons UGU and UGC both form the amino acid cysteine and thus is not expected to cause a major damage.

C. UCU to UUU: <u>Codon UCU forms the amino acid serine while the codon UUU forms the amino acid phenylalanine</u>. Thus, this eventual change in the amino acid formed has the potential to cause a major damage and thus option C is the correct option.

NOTE that a codon is a sequence of three DNA/RNA nucleotides that corresponds to a single amino acid.

8 0
3 years ago
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