Having white wool (W) is dominant over having black wool (w). Two heterozygous sheep are crossed. What is the probability that the offspring will have black wool?
%

What is the probability that the offspring will have white wool?
%

Correct relationship between molecular formula and empirical formula

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.

What are fossils of organisms that existed over a wide area but only for a limited time period called?