The punnett square shown presents a cross between two piranhas. both parents have large teeth.
according to the chart, which combination describes the offspring expected from the cross?
a)
50% large-toothed and 50% small-toothed
b)
75% small-toothed and 25% large-toothed
c)
75% large-toothed and 25% small-toothed
d)
100% large-toothed

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

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.