Answer:
c. Affected fathers have all affected daughters, but no affected sons.
Explanation:
Given that the disease is caused by a dominant allele on X chromosome, an affected father would have a disease allele in the X chromosome that passes along to the male gamete, while the gametes containing a Y chromosome would not have it (since it is X-linked).
During sexual reproduction, the father passes an X chromosome to its daughters (the second X chromosome being contributed by the mother) but an Y chromosome to its sons (the single X chromosome being contributed by the mother).
Indeed, within an affected father's offspring, all his daughters will receive the affected X chromosome from him, while his sons will receive an unaffected Y chromosome (since the disease is X-linked). These males will not inherit the disease, for they will receive an unaffected X chromosome from her mother (which is expected to be healthy since the disease is rare).
Answer:
The correct answer is<u> "A" Fatty acid chains in a triglyceride molecule, which contain a single double bond, are referred to as monounsaturated fatty acids.</u>
Explanation:
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Answer:
They both have roots, stems, and leaves to transport nutrients,
they’re both autotrophs,
they both rely on diffusion for nutrient transport
they both have seeds :)
Explanation:
^^^
Answer:
c. One strand of the DNA molecule is cut.
Explanation:
Restriction enzymes or RE cut both strands of a DNA molecule, generating restriction fragments with sticky or blunt ends. These enzymes can cut in more than one place in the chain.
A RE creates 2 or more restriction fragments if it cuts in at least 1 place of a linear DNA nolecule or in 2 or more places of a circular DNA molecule.
