Some offsprings look like their parents because we all have different genes. Different combinations of genes for one of these traits create a bunch of different physical attributes. Even though we get all our DNA from our parents, each of us has a unique combination of genes.
Prokaryotes dont have a nucleus
The graph of y = -2x + 3 is a straight line
Its slope is - 2
Its y-intercept is + 3
To draw the line you can use these two points (0,3) and (3/2 , 0)
This line does ont pass through the third quadrant. It comes downward from the second quadrant, touches the y-axis at y =3, continues on the rirst quadrant, touches the x-axis at x = 3/2, and contiues into the fourth quadrant.
Graph of its inverse
Exchange y and x in the given function and solve for the new y
x = - 2y + 3 => y = - x/2 + 3/2
It is also a straight line;
Its slope is -1/2
Its y-intercept is 3/2
It is also in the second, first and fourth quadrant
Use these two points to draw the line (0,3/2) and (3,0).
You do not need to know to draw this, but the inverse of a function is its reflection through the line y =x.
The answer is polygenic inheritance.
Many physical characters (traits) depend on many different factors, each of which is determined by different genes. This is called polygenic inheritance.
For example, the color of the skin in humans. The color of the skin results from the interactions of several factors determined by different pairs of genes:-Certain genes could affect the metabolism of skin melanocytes.-Other genes can determine the distribution of melanin in the thickness of the skin.-Some genes could determine the relative amounts of each of the two possible types of melanin.-Others may affect the production of certain hormones involved in the activity of melanocytes.
