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Marina86 [1]
3 years ago
6

4. Who discovered the first known case of a typhoid carrier?

Biology
2 answers:
Semmy [17]3 years ago
5 0

Answer:

mary mallon

Explanation:

Mary Mallon, the first known case of a healthy carrier in the United States, was proven responsible for the contamination of at least one hundred and twenty two people, including five dead

SashulF [63]3 years ago
4 0

Answer:

Mary Mallon (September 23, 1869 – November 11, 1938), also known as Typhoid Mary, was an Irish-born cook believed to have infected 53 people with typhoid fever, three of whom died, and the first person in the United States identified as an asymptomatic carrier of the disease pathogen, Salmonella typhi.

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Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait). Martha's dad had a straight hairline and una
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Answer:

3/8

Explanation:

Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait).

Martha's dad had a straight hairline (ww) and unattached earlobes (Ee, because she has the recessive alleles ee and both parents give us one allele).

This tells you that martha has a mother with at least one of both alleles dominant for widow peak and at least one recesive allele of attached earlobes

So, martha's alleles are: Ww and ee.

If she marries a man that is heterozygous for both traits (Ww and Ee) the probabilitys are

Ww Ee x Ww ee: WWEe, WwEe, wWee, and wwee

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3 years ago
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Explanation:

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3 years ago
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BlackZzzverrR [31]

Answer:

Two organisms both benefit from their interaction

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The grid-like lattice of proteins that gives the cell shape and support is the __________________. endoplasmic reticulum cytosol
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Here is an important list of "nevers" to follow when using a compound light microscope in the lab. 1. Never swing the microscope
ivolga24 [154]

Answer:

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Explanation:

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