_________ of the genes found on the X chromosome are duplicated on the Y chromosome.
a. All
b. None
c. Most
d. Some
Question 2
You were recently introduced to your roommate's sibling. To your surprise, even though the siblings are the same sex, they look nothing alike. Which of the following is the best explanation of this situation?
a. They must have different parents, as genetic inheritance ensures that they share a significant number of genes.
b. Although they started out very similar genetically, their genotypes have changed during development to make them look very different.
c. Given the number of different combinations of genes possible during reproduction, it may be that the two siblings don't really share many gene alleles.
d. One has expressed only recessive genes, while the other has not.
(A) The name and shape of the adult teeth. These teeth represent those found in the right side of th
Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods
Genes, hormones, and activity affect weight
Skin color is a polygenic trait controlled by three or four genes, producing a wide range of phenoty
(a) Chromosome painting with five different-colored markers in a normal cell. (b) Painting produces
A gene map for chromosome 12 from the NCBI database Map Viewer