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.
Photosynthesis
Explanation:
One of the metabolic pathways from the given options is photosynthesis. During catabolism, there is a build up of materials from smaller ones.
- Metabolism is a process that either involves the building up of materials or the breaking down to release energy.
- The building up of matter or energy is anabolism.
- The breaking down is known as catabolism.
- During the process of photosynthesis, green plants manufacture their food from carbon dioxide and water in the presence of sunlight.
- The products are glucose and oxygen gas.
- Energy is stored in the glucose as a chemical form of energy.
- This is an anabolic process.
- Respiration, breakdown of actin in muscles and alcohol fermentation are catabolic processes.
Learn more:
Fermentation brainly.com/question/12792548
Respiration and photosynthesis brainly.com/question/3437832
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