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Tema [17]
4 years ago
6

Which of the definitions below best defines a mutation?

Biology
1 answer:
victus00 [196]4 years ago
8 0

The correct answer is: A. A change in a cell's genetic material.

Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.

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Which of the following is not true concerning marine microbes?
olya-2409 [2.1K]

Option B- They play a minor role in biological and geo-chemical cycles is the right answer.

Marine microbes are tiny, single-celled organisms that live in the ocean. They play a major role in biological and geo-chemical cycles.

3 0
4 years ago
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Pathogenic microbes that cause disease in healthy people are called _______.
Rudiy27

The correct word to fill the gap is pathogens.

<h3>What are pathogens?</h3>

Pathogens are microbes that are capable of causing diseases or abnormalities in people that are healthy.

Microbes that are not capable of causing diseases are referred to as non-pathogenic.

It is derived from the Greek words "pathos' which means 'suffering' and 'genes' which means 'producer of'.

More on pathogens can be found here: brainly.com/question/18918957

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2 years ago
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Review the chart, which shows the population sizes of three African animals in 1990 and in 2000.
Veseljchak [2.6K]

Answer:

Population of lions are more than cheetahs and zebras.

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3 years ago
What is one reason cell biology is important? explain
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Cell bio is important so that we can know more about cells and how they function
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Where does fertilization occur in the female reproductive tract?.
algol13

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Fertilization of an egg by a sperm normally occurs in the Fallopian tubes. The fertilized egg then moves to the uterus, where it implants to the uterine lining

Explanation:

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