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Birth, growth into the adulthood, mating and giving birth to crias, and death.
Eyes
Cells divide as the zygote becomes a fetus with growth and development into babies when born, cells also divide with growth after birth into adulthood and to replenish and renew damaged or lost cells.
Their function is to hold all the information required to make and regulate the expression of all the different proteins in cells. The main function of the genes is the form the organism, which is like the parent organism. In bisexual animals, this means to combine the features from both the parents. So man give birth to man and lion gives birth to lion. Amoeba gives birth to amoeba. Second function of the genes is to regulate the growth of the organism. This include the puberty to adulthood to old age and death. Third function of genes is to give specific characters to the individual. Like color of the eyes, color of the skin, final height, determination of sex and many other characteristics.
Actually it isn't until full development not birth but some cells remain in G0 stage and they are the nerve and heart muscle cells but continue to perform their main functions for the rest of the organism's life.
It is the study of growth from birth to adulthood
They are a group of hormones secreted by adrenal cortex, an example is androgens which causes male features. If a woman produces too much androgen she can have excessive facial hair, which can be treated with Birth Control pills.
A person's height will increase from birth until adulthood, and in late adulthood, it may decrease.
150 to155
At birth 350, by adulthood 206.
Birth, growth into the adulthood, mating and giving birth to crias, and death.
No boss its not like what you are saying, Eye's will remain same in size till to death from birth, this is what natures beauty.instead of this all organs will change there size. I don't think there is any body part or organ in humans that remains the same from birth to adulthood. There must be some form of changes if that body part or organ is normal.
the eye
There are some studies that suggest that our facial expressions are inherited, witness that facial expressions of the blind from birth, who also smile and frown. http://www.answers.com/topic/facial-expression
Depending on the culture but in most western cultures it is considered ~18years
Armadillos are sexually mature at one year of age.
Tongo lizards are about 4cm at birth and 1 meter when it reaches adulthood.