Which of the following substances would you expect to find in a cell that uses active transport? a. many mitochondria near plasma membrane
b. many lysosomes throughout the cell
c. a higher concentration of sodium ions in the cell
d. an extensive rough E. R. throughout the cell
e. filled with ribosomes

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?

What do transitional fossils best support?