Brown hair color as (R, dominant) and blonde hair color was (r, recessive).

1)If hair color was an autosomal Mendelian trait, and an XX parent was heterozygous while an XY parent was homozygous dominant, what percentage of their offspring would have brown hair?

2) if hair color was an X-linked trait, and an XX parent was a carrier while an XY parent had brown hair color, what percentage would have brown hair?

3) Can an XY parent be a carrier for blonde hair? Why or why not?

In order to clone adult animals, scientists typically begin with a(n)

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Which test would show positive results for orange juice