Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.

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Now consider a single base mutation in a codon for leucine that creates a codon for phenylalanine. A true reversion changes the

madam [21]

Answer:

options A, B, D and E

Explanation:

leucine codons include: UUA, UUG, CUU, CUC, CUA, CUG

phenylalanine codons include: UUU, UUC.

CUU

replace C with U to give

UUU phenylalanine codon

replace underlined with A

UUA leucine codon

CUC

replace underlined with U

UUC phenylalanine codon

replace underlined with A or G

UUA, UUG leucine codons

UUG

replace underlined with U

UUU phenylalanine codons

replace underlined with C

CUU leucine codon

UUA

replace underlined with U or C

UUU or UUC phenylalanine codons

replace U with C

CUU or CUC leucine codons

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3 years ago

What part of a blade of grass allows the grass to stand up? A. Cellulose B. Glucose C. Monosaccharide D. Disaccharide

Crazy boy [7]

Cellulose is your answer

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he burning of coal, a fossil fuel, produces water and carbon dioxide. How is this similar to cellular respiration? A) Both requi

MariettaO [177]

Hello There!

Now, i'm not 100% sure on this but i think it is C.

Please let me know if it is correct..i'm sorry if it is wrong.

Hope This Helps You!
Good Luck :)

- Hannah ❤

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