B. change in the size of a chromosome.
C. change in two proteins.
D. change in the number of chromosomes in a cell.
Female cones produce pollen that fertilizes the egg.
Most coniferous trees have both male and female cones.
Male cones cannot produce pollen unless fertilized by the female cone.
Female cones produce pollen that is trapped by the male cones’ scales
(Female cones produce pollen that is trapped by the male cones’ scales) is not the correct answer because I got it wrong I dont know what the correct answer is because it doesn't show you if you got it wrong.
(4) They are released by the parathyroid glands.
a. 1 only
b. 1 and 2
c. 1, 2, and 3
d. 1, 2, 3, and 4