What is the purpose of using a Punnett square? A-to determine whether a trait is recessive or dominant
B- to determine the number of parents an individual has
C-to predict the number of offspring parents will have
D-to predict the ratio of phenotypes that will result from cross

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above