Answer:
A
Explanation:
It allows the cell to control what materials enter and leave.
this is true. when it is warmer the plant and insects can migrate to these other places so they do not have to die or hibernate through winter
Parasitic infection because a<span> </span>parasitic<span> disease, also known as parasitosis, and an</span>infectious<span> disease caused or transmitted by a</span>parasite<span>. Many </span>parasites<span> do not cause diseases.</span>Parasitic<span> diseases can affect practically all living organisms, including plants and mammals.
The study of </span>parasitic<span> diseases is called parasitology.</span>
Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)
Phenotype - Round seeds - 75%, Wrinkled seeds - 25% (3:1)
<h3>How explain your answer?</h3>
Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.
Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.
If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are dominant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.
Thus, this could be the answer.
To learn more about genotypes and phenotypes click here:
brainly.com/question/20730322
#SPJ1
Answer:
The correct answer will be option A.
Explanation:
The electrical impulses are generated in the sino-atrial node or SA node, a mass of cells which generates impulse in the upper atrium.
This electrical impulse transmits from the sino-atrial node to the atrio-ventricular node in the lower portion of the upper atrium through the internodal pathway- the pathway composed of atrial cells.
Once the impulse reaches the AV node, it is transferred to the ventricular portion of the heart through Bundle of His presence in the ventricular septum. This bundle of his divides into left and right ventricles through bundle branches and stimulates both the ventricles.
Thus, option-A is the correct answer.
