Animal tissues .
a. are composed of undifferentiated cells
b. are joined with each other by nerve cells
c. do not necessarily have specific functions
d. contain relatively small amounts of fluid
e. are organized into organs

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america