Female sheep have egg cells with 26 chromosomes. How many chromosomes are in each cell of an adult sheep? A. 13
B. 46
C.52
D.26

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.