In 1941, ______ was the first used successfully to treat an infection caused by a bacterium.

1 answer:

6 0

Albert Alexander was the first patient to be successfully treated on an infection caused by bacteria. He accidentally scratched a thorn of a rose on his face which badly infected him. One of his eyes had also been removed. He was given an infusion of 160 mg of penicillin on February 12, 1941, and within 24 hours, his wounds begun to heal. He, however, died on March 1941.

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Answer:

The correct answer is option C. "disruptive selection".

Explanation:

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muminat

Answer:

E (Red shows incomplete dominance over white)

Explanation:

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In this case, the red flowered snapdragon (RR) does not completely cover up the expression of white flower (rr), hence a hybrid/heterozygous offspring is produced that combines the phenotypic characteristics of both parents to form an intermediate flower colour (pink). Hence, it can be said that Red flower is incompletely dominant over white flower or no allele/trait is dominant or recessive to another.

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Explanation:

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