One Chromosomal Abnormality That Is Usually Fatal Is

question 64

Multiple Choice

One chromosomal abnormality that is usually fatal is

• A) a mutation in a gene.
• B) an exchange of material between homologous chromosomes.
• C) extra copies of sex chromosomes.
• D) the addition of an extra autosomal chromosome.

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Definitions:

Epigenetic Marks

Chemical modifications to DNA or histones that affect gene expression without altering the DNA sequence, influencing development and health.

Stress Hormones

Biochemical substances, such as cortisol, that are released into the body in response to stress, affecting various bodily functions and emotional states.

Chromosomes

Structures within cells that contain DNA and carry genetic information critical for the development, functioning, and reproduction of organisms.

Genomes

The complete set of an organism's DNA, including all of its genes.