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Gelneren [198K]
3 years ago
10

When did the mass extinction occur? (Name the era and period)

Biology
1 answer:
kherson [118]3 years ago
6 0

Answer:

Explanation:

The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.

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Tall height is dominant to short height in pea plants. You have a tall pea plant that you cross with a short pea plant. What is
zheka24 [161]

Answer:

The tall parent was heterozygous

Explanation:

If tall height is dominant to short height the only genotype possible for short height is hh, while there are two possible genotypes for tall height, Hh and HH. When HH is crossed with hh all the offspring are Hh, but if Hh is crossed with hh, a quarter of the offspring is HH, a quarter is hh and half is Hh. If the tall pea plants were HH there would only be tall offspring, but because there are some short offspring we know that the tall pea plants must have a genotype of Hh.  

5 0
3 years ago
The process in which haploid gametes are formed in diploid organisms is called
maria [59]

Answer:

There are two types of cell division Mitosis and Meiosis

a cell divides to form diploid gametes during mitosis and haploid during meiosis

6 0
3 years ago
(d) Researchers discovered a strain of C. parvum that expresses a functional variation of the lactate dehydrogenase gene. A DNA
Gelneren [198K]

Answer:

Changing the allosteric site would definitely impact the sensitivity of the blocker, and we can not understand precisely how it is owing to our lack of awareness of the specific adjustments and the FX11 layout.

Explanation:

The move would most likely reduce affinity, and FX11 will no longer be as successful as inhibiting C. Growth of parvum. An inhibitor may reach an allosteric site since the site has some sizes and operational classes that precisely match the shape and operational categories of the inhibitor, which is how the association is obtained if the shape is modified and the inclination is affected.

Such chemicals can be used as human drugs because the mechanism we 're disrupting isn't that normal in human cells, we 're talking about lactic fermentation. C.parvum is a parasite that is present in the digestive tract, and these areas do not appear to experience aerobic glycolysis. The material that undergoes this process under other conditions is muscle tissue. It is possible that the absorbed drug can penetrate the bloodstream and touch other organs, and we would recommend that clinicians avoid exercise during this drug therapy.

3 0
3 years ago
WILL MARK BRAINLYEST.
Illusion [34]

Is the answer three

Because they help the body absorb vitamins a, d, e, and k.

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3 years ago
3.____________________ helps make animal membranes more rigid.
Arturiano [62]
The answer is cholesterol
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3 years ago
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