Answer:
256
Explanation:
If there are 2 pairs of chromosomes Aa and Bb, there are 4 possibilities for independent assortment of gametes:
A w B, aith with b, A with b and a with B.
If there are 3 pairs of chromosomes Aa, Bb and Cc, there are 8 possibilities:
ABC, abc, ABc, Abc, aBC, aBc, abC, AbC
This corresponds to 2^n, where n= the number of chromosomes.
Therefore, with 8 chromosomes, the possibilities are 2^8 = 256
This is for each parent.
Answer: Keystone species
Explanation: A keystone species is a species which occupied a niche so central in the ecosystem that it has a disproportionately large effect on its environment and other species in it.
The coral's function in its ecosystem is so vital that if you were to remove it, the entire community would be drastically altered beyond recognition.
The coral serves as the base structure of its ecosystem.
That is to say that many corals are hermatypic(they form reefs). This reef serves as the environmental structure of the Coral's ecosystem. Built in and around it is a very biodiverse biotic environment. The coral not only serves as a hiding place and habitat for many marine organisms including fish, clams, lobsters, etc. It serves as resting place for larger animals like turtles and also serves as hunting sites for other animal species.
The most common way of determining a keystone species, is to see what happens when that species is removed from the ecosystem. Coral have shown to be so central to their ecosystem that the bleaching of coral reefs due to tourism and climate change causes a massive loss to biodiversity. And this is quite significant as reefs are the most biodiverse marine habitats.
One of the advantages of nuclear power over traditional fossil fuels is that nuclear power produces much larger amount of power. <span>The Fort Calhoun plant in Nebraska has one reactor with the smallest generating capacity1 of 479 megawatts (MW). Hope this answers the question.</span>
Answer:
False
Explanation:
In the troposphere, near the Earth's surface, human activities lead to ozone concentrations several times higher than the natural background level. Too much of this ground-level ozone is 'bad' as it is harmful to breathe and also damages vegetation.
The stratosphere or “good” ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays.
Answer:
Linings of hollow organs
Explanation:
Smooth muscle cells are usually found in the lining of hollow organs such as all arteries and veins, wall of stomach, uterus, urinary bladder, digestive system etc. The cells of these linings are spindle shaped and consist of a nucleus at the center which lacks striations.
They work as a housekeeper and are under involuntary control except the heart. They lack striation because of irregular arraying of actin and myosin filament along the length of the cell.
