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C is the most likely answer to this question.
It’s c: R is at the highest level of organization
Answer:
Tt (both heterozygous)
Explanation:
According to this question, Tay Sachs is a recessive disease (t) that causes an inability to process certain nutrients which then build up in the brain, resulting in death (at a very young age). This means that this disease can only be phenotypically expressed when the recessive alleles are both present in the gene i.e. tt.
If a man and a woman had a child born with this disease, but neither have the disease, it means that both of the parents are dominant but heterozygous (carriers) for the disease. This means that they both have a genotype "Tt". So when they both mate i.e. Tt × Tt, they produce the following offsprings: TT, Tt, Tt, and tt.
The "tt" offspring is the child with the Tay Sachs disease.
When it comes to stability and the absence of atom movement surrounding the bond, <u>peptide bonds</u> behave like double bonds (peptide bonds are unusually stable compared to other types of <u>macromolecules</u>).
Peptide Bond- The -nitrogen atom of one amino acid and the carbonyl carbon of another create a peptide link, also known as an amide bond. As opposed to -amine or -carbonyl, so-called iso-peptide bonds are amide bonds between sidechain amines or carbonyl carbons.
Macromolecules- An extremely big molecule made up of hundreds or thousands of atoms, such as a protein, colloidal particle, or particularly a polymer. For instance Macromolecules include proteins, DNA, RNA, carbohydrates, and lipids.
To know more about the peptide bonds, click on the below link,
brainly.com/question/15078143
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