What must be true for a male individual to be a carrier of a y-linked recessive allele?
a. the gene has no other alleles.
b. the gene is only expressed in females.
c the gene is silenced on the y chromosome.
d. the gene is also found on the x chromosome.

What’s this animal (picture is tagged) and where is it most likely to live, rainforest or desert?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.