Question

chromosomal inheritance: phenotype of xo
in humans, if a non - disjunction event led to an individual with a genotype of xo, they would
multiple choice
be male because they only have one x chromosome.
be female because they do not have a y chromosome.
display both male and female characteristics.
not survive.

Explanation:

In humans, the presence of a Y chromosome typically determines maleness. Since an individual with XO genotype lacks a Y chromosome, they do not develop male - specific characteristics. Also, individuals with XO genotype (Turner syndrome) do survive. They have a female phenotype as the absence of a Y chromosome means the default female - developing pathway (in the context of human sex determination) is followed. They do not display both male and female characteristics.

Answer:

be female because they do not have a Y chromosome.