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nignag [31]
3 years ago
10

What controls the direction of a molecule, such as oxygen, involved in passive transport?

Biology
1 answer:
Grace [21]3 years ago
4 0
The nucleaus controls everything within cells

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In a particular species of frogs, black spots are a dominant trait and their absence is a recessive trait. In a population of fr
kipiarov [429]

The expression which is the correct way to calculate the frequency of the dominant allele is 134/200. Thus, the correct option is D.

<h3>What is Allelic frequency?</h3>

The allelic frequency may be defined as the sum total of all the alleles of a gene in a population. It represents the overall genetic diversity within a population.

The allelic frequency is calculated by the formula when the genotypes are given in number. It is as follows:

2 × Number of Purebred dominant + Number of heterozygous/ 2× Total number of individuals in a population.

∴ Allelic frequency of dominant allele = 2 × 50 + 34/ 2× 100 = 134/200 = 0.67.

The allelic frequency of the Dominant allele is 0.67 while the allelic frequency of the recessive allele is 0.33.

Therefore, it is well described above.

To learn more about Allelic frequency, refer to the link:

brainly.com/question/14649601

#SPJ1

5 0
2 years ago
Two different scientists were studying the carbon levels of the air above a large city. They both found that the levels had incr
ss7ja [257]

Answer:

Scientist 1

Explanation:

<em>The conclusion of scientists 1 is valid.</em>

Human activities such as burning of fossil fuels, agriculture, deforestation, etc. leads to the emission of carbon in the form of carbon dioxide into the atmosphere. <em>An increase in the population of a city will only lead to an increase in these activities and hence, an increase in the amount of carbon emitted into the atmosphere.</em>

Also, volcanic activities leads to the production of volcanic gases which is a mixture of carbon dioxide, oxides of sulfur, nitrogen, etc.

<u>However, an active volcano that is several miles away from the city might not be a major source of carbon in the air above a large city. The carbon dioxide produced from such volcanic activity thins out before reaching the city.</u>

5 0
4 years ago
What scientist concluded that all cell come from preexisting cells
evablogger [386]
Ah this is Rudolf Virchow
I usually give tricks to remember the name, but I cant think of any...hope this helps!
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What type of barrier affected the genetic variation and diversity of Darwin’s finches on the Galápagos Islands?
exis [7]
That the island was far away so the species were not alike from main land birds
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3 years ago
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What is one example of wind erosion and one example of weathering caused by wind
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Answer:

Wind and water cause small pieces of rock to break off at the side of a mountain. ... Example of erosion: Wind carries small pieces of rock away from the side of a mountain.

Explanation:

6 0
3 years ago
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