Answer:
Direct contact.
Explanation:
Since it was spread through facial tissue, physical contact is needed.
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Youwould have to know if the genotype was heterozygous or homozygous dominant
Answer:
The correct answer would be - d. With the end of genetic isolation gene flow took place
Explanation:
It is given that people of Troublesome Creek Kentucky were isolated and have a rare recessive allele that results in a blue tone to their skin. However, later these isolated people connected with the people from outside, and due which allow them to intermate. Intermating among populations from isolated and people from outside leads to gene flow.
Methemoglobinemia was present in the isolated population as they had both recessive alleles in their genotype and other hand people from outside might have heterozygous or both dominant allele genotypes that make them free from this disorder.
Due to the intermating and gene flow, the number of heterozygous conditions rises and after many generations slowly methemoglobinemia could have disappeared due to the masked recessive allele.
Answer: As altitude increases, temperature decreases.
Explanation:
This is because the higher you go the colder it gets, except in the thermosphere, which is the warmest layer of Earths atmosphere.
