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qwelly [4]
3 years ago
5

Over the years, there has been an overuse of antibiotics. This overuse has resulted in more less resistant and weaker bacteria t

o die off, while the more resistant bacteria are surviving. These survivors are sometimes called superbugs. What type of selection would this represent?
A.stabilizing selection
B.directional selection
C.disruptive selection
D.normal distribution​
Biology
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

The correct answer is - B.directional selection.

Explanation:

When a bacterial colony is exposed to an antibiotic the maximum number of the bacteria dies due to noo resistane and some of survive even with no or very less resistance to the antibiotic and reproduce.

Over many generations  the survived and continuosuly divivng resitant bacteria become more and more with higher frequency and ultimately evolved to a resistance strain of the bacteria for the antibiotic. Such mutation is directional selection as the frequency of the resistance bacteria going from no resistance to a high amount of resistance is unidirectional and progresive.

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When a long-period comet is farthest from the Sun in its orbit, which features of the comet exist? Select all that apply.
____ [38]
When a comet is close to the sun, the force from the sun's radiation pushing against the comet making a dust and/or gas tail. The comet being close to the sun also forms the coma of a comet due to it's radiation. The only thing that doesn't exist while being close to the sun is the nucleus. In conclusion, When a long period comet is farthest from the sun in its orbit, C. the Nucleus exist.

Hope this helped! 
7 0
2 years ago
Matt intends to throw a rock at jamal and hit jamal in the head. jamal is standing directly next to sally. matt hits sally in th
katen-ka-za [31]
Answer:

The options for this question are:

1. A negligent tort because Matt was careless in throwing the rock.
2. A negligent tort because he only intended to harm Jamal.
3. An accidental tort because he struck Sally by mistake.
4. An intentional tort because Matt intended to throw the rock and physical injury resulted.
5. Matt did not commit a tort against Sally because he only intended to strike Jamal with the rock

The best answer choice is:

An intentional tort because Matt intended to throw the rock and physical injury resulted.

Explanation:
If Matt originally wanted to hit Jamal with a rock in the head but instead hit Sally who is standing directly next to Jamal, then he committed an intentional tort. This kind of tort can be transferred as the tort easer knew certainly that his plan would result in inevitable consequences.<span>
</span>
6 0
3 years ago
Properties of life include the use of blank to power an organisms activities
OlgaM077 [116]

Answer:

Properties of life include the use of <u><em>energy</em></u> to power an organisms activities.

Explanation:

Energy is the driving force which allows every cell to perform its functions. Organisms like humans tend to gain energy by the process of cellular respiration. Cellular respiration can be described as a process in which organisms make carbon dioxide and water from glucose (from food) and oxygen (from air). Huge amounts of ATP is also released during this process. In plants, the process of photosynthesis and cellular respiration supplies them with the energy sources.

6 0
3 years ago
What do the terms heterozygous and homozygous mean?
harina [27]
Heterozygous- a certain gene that can carry two different alleles
Homozygous- a certain gene that carries two copies of the same alleles
8 0
2 years ago
Fitness is determined by
Helen [10]

Answer:

Averaging the fitness of its members.

Explanation:

The fitness of a whole population can also be determined by averaging the fitness of its members. Absolute fitness is the ratio between the number of individuals with a genotype before selection versus after selection. Fitness is usually discussed in terms of genotypes, or collection of genes.

7 0
3 years ago
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