The sex of mammals is determined by:
a. the autosomes they receive.
b. the type of sex chromosomes received.
c. the number of recessive chromosomes received.
d. none

2. which is the last step in the scientific method?

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

Some substances but not other can cross the (blank) membrane of a cell