An antibody, because antibodies are produced for a specific virus and are unique to that virus, that protein is the response to influenza.
Answer:
Why does the speaker in this excerpt from Langston Hughes's "I, Too" wish to eat at the table?
Tomorrow,
I'll be at the table
When company comes.
Nobody'll dare
Say to me,
"Eat in the kitchen,"
Then.
A.
The speaker hopes to sit at the table and interact with those he serves from the kitchen.
B.
The speaker resents being sent to the kitchen and wants an equal seat at the table with other people.
C.
The speaker hopes to rise above those now at the table and force them to eat in the kitchen later.
D.
The speaker is uncomfortable while eating alone in the small kitchen.
E.
The speaker is proud to be in the kitchen because he is serving the guests at the table.
Explanation:
Answer:
Lungs and Endoskeleton.
Explanation:
Gills helps it live in water, and Scaly skin doesn't really apply
The mitochondria converts food into energy
No, the sickle-cell anemia allele won't be eliminated by natural selection.
Sickle-cell anemia trait is controlled by a single gene and the allele (S) for sickle-cell anemia is a harmful autosomal recessive.
It is caused by a mutation in the normal allele (A) for hemoglobin (a protein on red blood cells).
Heterozygotes (AS) with the sickle-cell allele are resistant to malaria, a deadly tropical disease. It is common in many African populations.
In these areas, (S) carriers have been naturally selected, because their red blood cells, containing some abnormal hemoglobin, tend to be in sickle shape when they are infected by the malarial parasite.
Therefore, they are more likely to survive and reproduce. This keeps the S allele in the gene pool.
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