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3 years ago

Which of the following is the best example of evolution occurring?

Biology

2 answers:

xz_007 [3.2K]3 years ago

8 0

The correct answer is - C. Strains of bacteria can become immune to antibiotics that once killed them effectively.

One of the best examples where we can witness the evolution taking place are the bacteria. The bacteria can be very dangerous, so because of that people created antibiotics in order to control it or destroy it. But the bacteria has shown on multiple occasions that it actually is able to develop immunity to the antibiotics after few generations. Because of that, new antibiotics are constantly made in order to cope with the bacteria, but it constantly manages to strengthen its immune system, so its an ever going battle between the evolution of the bacteria and the scientists that try to kill it.

s2008m [1.1K]3 years ago

4 0

Strains of bacteria can become immune to antibiotics that once killed them effectively <span>is the best example of evolution occurring.</span>

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Which safety rule is MOST important when smelling the product of a chemical reaction?

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Use a wafting motion

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3 years ago

Transcribe DNA___RNA. I need help

Leni [432]

Answer:

Explanation:

Thymine pairs with Adenine.

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2 years ago

What might be a symptom of a person whose vein valves are not functioning properly and are causing fluid it flow away from the h

IrinaVladis [17]

Considering answers;

-fever

-constricted veins

-swollen veins

-confusion

Answer;

Swollen veins

Swollen veins might be a symptom of a person whose vein valves are not functioning properly and are causing fluid it flow away from the heart.

Explanation;

Valves are structures that are found in the circulatory system both in the heart and the veins.

They function to prevent the back flow of blood.

They do so by ensuring the continuous flow of blood in one direction.

If the valves are not functioning properly it may lead to various effects such as swollen veins due to the back flow of blood which may lead to the pooling of blood in the extremities.

4 0

3 years ago

Which organisms are made up of many different groups of specialized cells?

ZanzabumX [31]

A.) Multicellular <span>organisms are made up of many different groups of specialized cells

Hope this helps!</span>

5 0

3 years ago

In humans, black hair (B) is dominant over red hair (b) and having six fingers (F) is dominant over having five fingers (f). Sal

Lera25 [3.4K]

Answer:

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

Explanation:

Given

Black hair allele is represented by "B"

Red hair allele is represented by "b"

Trait of having six fingers is represented by "F"

Trait of having five fingers is represented by "f"

Also , B is dominant over b and F is dominant over f

Genotype of sally having black hair and five fingers when her father has red hair is Bbff

Genotype fo Bill having red hair and six fingers when his mother had five fingers is bbFf

Bbff * bbFf

Bf bf Bf bf

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

5 0

3 years ago