The skull is designed to
a. protect the brain.
b. control how the body moves.
c. protect the larynx.
d. produce brain cells.

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

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?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.