Asked by Jairahme Morales on May 01, 2024
Verified
What explains the viability of individuals with aneuploidies for the sex chromosomes?
A) Sex chromosomes carry less information than autosomes.
B) The lack of crossing-over between the X and the Y chromosomes.
C) Sex chromosomes are smaller than most autosomes.
D) The information on sex chromosomes is duplicated on the autosomes.
E) Dosage compensation, by which one X chromosome per cell is inactivated.
Aneuploidies Viability
The survival and reproductive success of organisms with aneuploidy, a condition of having an abnormal number of chromosomes, which can affect health and development.
Dosage Compensation
A genetic mechanism that balances the dose of X chromosome gene expression between males and females in some species.
- Identify and elucidate diverse genetic syndromes along with their chromosomal foundations.
Verified Answer
ZK
Zybrea KnightMay 08, 2024
Final Answer :
E
Explanation :
Dosage compensation mechanisms, such as X-chromosome inactivation in females, ensure that the gene expression levels from sex chromosomes are balanced between the sexes and across different cell types. This allows individuals with aneuploidies of the sex chromosomes (e.g., Turner syndrome, Klinefelter syndrome) to often have less severe phenotypes compared to autosomal aneuploidies.
Learning Objectives
- Identify and elucidate diverse genetic syndromes along with their chromosomal foundations.