A Karyotype

question 69

Multiple Choice

A karyotype

• A) will always show 46 chromosomes.
• B) will always show 23 chromosomes
• C) can be made from the mother's skin cells to help determine whether her child has too many or too few chromosomes.
• D) will show you exactly which genes are mutated.
• E) can be made using amniotic fluid to detect chromosomal abnormalities.

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Definitions:

Noncoding Sequences

Regions of DNA that do not code for proteins but can regulate gene expression and have roles in the genome's structure and function.

Introns

Non-coding sequences of DNA within a gene that are removed during RNA processing before translation into proteins.

Eukaryotic

Eukaryotic refers to organisms whose cells contain a nucleus enclosed within membranes, distinguishing them from prokaryotic organisms, which lack a membrane-bound nucleus.

Frame Shift Mutation

A genetic mutation caused by insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.