Muscle cells and nerve cells in one species of animal owe their differences in structure to
a) having unique ribosomes
b) using different genetic codes
c) having different chromosomes
d) having different genes expressed

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated