Answer:
The correct option is C. Color blindness is an example of sex-linked traits.
Explanation:
Sex-linked traits can be described as those traits for which genes are present on the sex chromosomes. In humans, as X chromosome is a lot bigger than the Y chromosome, hence majority of the sex-linked traits are present on the X chromosome.
Colour blindness is an X linked trait and is more common to men than to women. This is because the gene for colour blindness is present on the X chromosome. As men have only one X chromosome so they have more chances of this disease.
The cell membrane protects the cell from unwanted things coming inside. It is a barrier. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
If a student made a model of an onion skin cell using a microscopic magnification scale of 500:1 and the length of the modeled cell is 15 cm, the real cell's length would be 0.03 cm.
The scale is 500:1. This means that the dimension of the real cell without being magnified under the microscope would be 1/500.
Thus, if the length of the cell under the microscope is 15 cm. This length has been multiplied by 500. In order to get the real length, it must be divided by 500.
15 x 1/500
= 0.03 cm
More on microscopic magnification can be found here: brainly.com/question/14668612