Asked by

Betziany Mercado Roldan
on Nov 26, 2024

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Which of the following is correct regarding chromosomes?

A) At conception, the fertilized embryo has 48 chromosomes, 24 from the female egg and 24 from the male sperm.
B) The mother of an embryo always contributes a Y chromosome and the father always contributes an X chromosome.
C) Down syndrome results when chromosome 21 is present in triplicate instead of as the usual pair.
D) Chromosomes have no relationship to deoxyribonucleic acid (DNA) .

Chromosomes

Structures within cells that contain DNA and carry genetic information vital for cell function, development, and reproduction.

Down Syndrome

A genetic disorder caused by the presence of all or part of a third copy of chromosome 21.

Deoxyribonucleic Acid

A molecule that contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms and many viruses.

  • Understand the influence of genetics and heredity on personality traits and mental health conditions.
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Cassidy AssinckDec 02, 2024
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