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AleksandrR [38]
3 years ago
15

Penicillin is an antibiotic that was discovered in 1928. Today, many species of bacteria have acquired resistance to penicillin.

This adaptation occurred as the result of
A) mutualism.
B) symbiosis.
C) genetic mutation.
D) divergent evolution.
Biology
2 answers:
nata0808 [166]3 years ago
6 0
I think it is D)maybe
Bad White [126]3 years ago
6 0
It's genetic mutation, Darwin found out that changes in the DNA made bacteria resistant to certain drugs
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MOst cells in a typical brain are a) haploid b)diploid C) triploid D) a mixture of haploid and diploid D) the brain is not made
sergiy2304 [10]
B) Diploid - Only Gametes are Haploid. Every other cells are somatic cells which are diploid. They contain 46 chromosomes rather than 23 that the haploid carry. Neurons and glial cells make up of the brain and that makes up the nervous tissue. Just remember Gametes (sex cells) are the only cells that are haploids.  
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When ascending in an aircraft, the pressure in the middle ear, relative to the outside air, will: increase decrease remain const
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7 0
3 years ago
A scientist is researching two different traits in an insect: body texture and color. Smooth body (B) is dominant to bumpy body
finlep [7]

Answer:

Independent assortment

Explanation:

The type of inheritance displayed by the offspring is a simple <u>independent assortment inheritance according to Mendelian law.</u>

The result of crossing BbGg and bbgg is as follows (see the attached image)

<em>4 BbGg smooth and gray</em>

<em>4 Bbgg  smooth and white</em>

<em>4 bbGg bumpy and gray</em>

<em>4 bbgg bumpy and white</em>

The phenotype ratio from the cross is 1:1:1:1 as far as the independent assortment is concerned.

Now, looking at the population of each phenotype from the cross

Smooth, gray 119

Smooth, white 123

Bumpy, gray 121

Bumpy, white 117

119:123:121:117 is approximately equal to 1:1:1:1.

Hence, the cross agrees with Mendel's law of independent assortment of genes.

6 0
3 years ago
1.) Which of the following is an example of an adaptation?
Zigmanuir [339]

Answer:For number 1 i put G

Explanation:

8 0
3 years ago
Explain global warming and climate change
vladimir2022 [97]

Answer:

Global warming is the increase in the earths atmosphere from several things. Pollution is the main cause of this. "Global warming" is the overall effect and "climate change" is what is happening to our planet currently.The average global tempature is increasing at a very high rate and is getting worse very quickly.  Scientists say that unless we slow down global-warming emissions, average U.S. temperatures could increase by up to 10 degrees Fahrenheit over the next century. Pollutants can last over a year in our atmosphere these pollutants trap the heat and cause our atmosphere to become warmer (green house effect). The biggest source of climate change is the burning of fossil fuel :coal, petroleum, natural gas, oil shales, bitumens, tar sands, and heavy oils.

Explanation: Hope this is of the usefull have a most wonderfull day!

6 0
3 years ago
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