Answer:
True
Explanation:
Cytokines are proteinaceous substances that are secreted by specific immune system cells. These belong to a category of signaling molecules that are helpful in communication between the cells of immune system and thus help to mediate and regulate immunity, inflammation and hematopoiesis. Cytokines have ability to act on three types of cells -
- The cell that secretes them
- The nearby cells
- The distant cells
These molecules bind to the receptors present on the responsive target cell and evoke a particular biological activity.
The four cells that result from meiosis have half of the genetic material (chromosomes) of the original parent cell. the cells that result from meiosis are gametes and two gametes from two individuals combine to create the first cell of a new individual since each parents gamete only has had as much genetic material the new individual has a complete set
Answer:
D. To see if simple molecule can combine spontaneously
Explanation:
Thanks :)
<span>Crossover is the first way that genes are shuffled to give rise to genetic diversity. Crossover takes place in sexual reproduction. Chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other. When they break at the same place (locus) in the sequence of base pairs, the result is an exchange of genes called genetic recombination. That is the normal way for crossover to occur. Genetic recombination ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity is created.</span>
Your BMI (body mass index) is 21.6, which is a normal BMI. So, you are NOT overweight.