Answer:
Explanation:
Each daughter cell is haploid and has only one set ofchromosomes, or half the total number of chromosomes of the original cell. MeiosisII is a mitotic division of each of the haploid cells produced in meiosis I
Your friend has a naive worldview mostly from news and other media
Answer:
ok so
Explanation:
The role is
The Excretory system is responsible for the elimination of wastes produced by homeostasis.
The main structures are
The kidneys, large intestine, liver, skin, and lungs. They are part of the urinary system, which also includes the ureters, bladder, and urethra.
Maintaining homeostasis
Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Organs of excretion make up the excretory system. ... The kidneys maintain homeostasis by controlling the amount of water, ions, and other substances in the blood.
Answer:
a. The original spraying has caused a permanent mutation, giving the insects genetic resistance to the spray.
Explanation:
This is a practical evidences of mutation and variation, as mechanisms of evolution.
The insecticide is the selective pressure. As a results of continuous spray, the parents of the present mosquitoes must have acquired certain characteristics or traits by gene mutation which makes them resistant to the selective pressure (insecticides), and therefore survive the spray in the past.
Therefore when these resistant parents mated, with high reproductive success (leading to large gene pool of these traits,); variation in the genetic composition increases as the resistant gene is passed from generations to generations in the population. Therefore, the population of present day mosquito with genetic resistance to insecticides increases.They are therefore naturally selected, and able to survive as the present day mosquitoes with high resistance to insecticides.
