Non-disjunction errors involving sex chromosomes sometimes occur in humans. A human with 3 sex chromosomes (for example, XXY or XYY) is male. A human with a single chromosome is female. A gamete with a single Y chromosome is not viable.
Which is the BEST argument for the connection between the number and types of sex chromosomes and their genetic effect?
A
Multiple Y chromosomes often determine biological gender
Genes on the Y chromosomes are essential for survival whether biological gender is male or female
с
Genes on the X chromosomes are essential for survival whether biological gender is male or female,
The two X chromosomes in females always segregate independently