There were 21 tricycle wheels in the driveway. A tricycle has 3 wheels. How many tricycles were in the driveway?

When genetically based traits are inherited independently from each other this is known as?

The number above the element's symbol is the element's atomic number. Match each element with the number of valence electrons it has.

Which is not part of macroevolution? A. mass extinction B. evolutionary trends C. new species D. genetic drift

Why do deep water fish die when brought to the surface?

What is the over-the-counter, lower-dose version of the fat-blocking prescription drug xenical (orlistat) ?

Blond hair is represented by the filled circles, and brown hair is represented by the empty circles. from this pedigree, what can be said about blond hair color?

The offspring of a particular cross are 100% heterozygous for tallness. What were the most likely genotype a of the parents?

Which is a reflex response?

You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E coli cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds

How long ago did oceans form