Male-pattern baldness is a X-linked recessive trait, labelled X^{\text{b}}
b
start superscript, start text, b, end text, end superscript, with the dominant normal hair gene being X^{\text{B}}
B
start superscript, start text, B, end text, end superscript.
A father with the genotype X^{\text{B}}
B
start superscript, start text, B, end text, end superscriptY and a mother with the genotype X^{\text{b}}
b
start superscript, start text, b, end text, end superscriptX^{\text{b}}
b
start superscript, start text, b, end text, end superscript have a son.
What is the percent chance that the son will inherit male-pattern baldness?

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

the answer is:

carbon dioxide

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the answer would be knowledge about cars!