<span>A cell is the most basic form of
life. It is what most of the organisms are made off. For the organism to
function, the cell must also function. It has organelles too that helps
functions what the microorganisms need. A leaf cell contains chloroplasts that
animal cells and animal cells do not have.
The chloroplast is where the photosynthesis happens. It needs sunlight
for the process of photosynthesis. Notice that the leaf has a broader surface
area to enable them to be exposed to the sun.</span>
If you were referring to a cross between BB and Bb genotype then the answer would be 50%.
You can figure this out by making a Punnett Square.
B b
B BB Bb
B BB Bb
If you look at the result there is a chance that 2 out of the 4 will have a mixed genotype of Bb. The probability would then be 50%.
There's 39 chromosomes in the sperm cell. Why? Because sperm cells are gametes and therefore they are haploid cells meaning they have half the number of chromosomes of a regular cell or diploid cell.
78 / 2 = 39
Receptors detect changes in the environment. For a stimulus to elicit a response, certain cells must have an appropriate receptor. Stimulation of the receptor initiates a specific signal pathway.
