Which of the following structures develops into a pollen grain?
a. megaspore
b. anther
c. microspore
d. archegonium

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

What is the farthest destination to date for a human spaceflight mission?

Explain how scientists use geologic time to determine the age of landforms.