Answer:
The main function of the transport system is to allow for the move nutrients, oxygen, carbon dioxide, hormones, antibodies, urea and heat within the blood plasma throughout the body.
Explanation:
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Answer:
The correct answer is a) A gene.
Explanation:
DNA is a molecule that contains genetic information. However, when the question states that there are specific sequences, that refer to genes, that are pieces of the DNA that code for specific proteins with a process of transcription and translation.
Answer:
mutations can be either beneficial or harmful depending on the environment
Explanation:
Mutations can be defined as genetic changes in the nucleotide sequence of the genome of one organism. Mutations are usually neutral, but they can also be deleterious and/or beneficial depending on the environment. For example, recessive mutations that cause sickle-cell anemia, which is a recessive genetic disease that affects homo-zygous individuals, have shown to be advantageous for heterozygous individuals living in regions where malaria is endemic. Beneficial mutations can be selected by natural selection, thereby increasing their frequency in the population.