Because hormones secreted by endocrine glands regulate the activity of body cells ..the release of body hormones into the blood is controlled by a stimulus either causes an increase or a decrease in the amount of hormone secreted .
They both have an egg cell wall, a vacuole, and chloroplast, smooth and rough ER, and much more.
Onion skin is treated to be a tissue because it is thin and - brittle.
The skin cells of the onion get a well which gives- the outer portion its rigid shape.
Meiosis is a special type of cell division in sexually-reproducing organisms used to produce the gametes, such as sperm or egg cells.
A heterozygous individual is someone who has one recessive and one dominant trait
ex: (Dh). D- black hair. d- blonde hair
The phenotype will be the one that belongs with the dominant trait (D) so the phenotype would be black hair.
hope that helps
