A woman who has a sex-linked recessive trait has a son with a man who does not have that trait. Which of the following is true about their son? Choose 1
A
He can only be an unaffected carrier.

(Choice B)
B
There is a 100\%100%100, percent chance he will be affected.

(Choice C)
C
There is a 50\%50%50, percent chance he will be unaffected.

(Choice D)
D
There is a 0\%0%0, percent chance he will be affected.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna

How many autosomes are in this human karyotype? how many sex chromosomes?