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GalinKa [24]
3 years ago
7

The first protists probably appeared around a. 1.5 million years ago b. 170 million years ago c. 1.5 billion years ago d. 5 bill

ion years ago
Biology
2 answers:
mixer [17]3 years ago
7 0

Answer:

1.5 billion years ago

Explanation:

Protists are a collection formed up of protozoa, unicellular algae, and fungus forms. We will focus on the being part of this society: the protozoa (proto = first, zoa = beings). Protozoa are the earliest discovered collection of heterotrophic living that utilize and modify complicated meal particles into power. Although protozoans are only made up of a single cell, these organisms control to perform all the necessary responsibilities of life.  The protozoa are split into four principal associations: the ciliates, the flagellates, the heliozoans, and the amoebas.

slamgirl [31]3 years ago
6 0

Answer:

Option (C)

Explanation:

Protists are the kingdom that includes unicellular organisms. These organisms are eukaryotic in nature which means that it has a well-defined nucleus. They may be present in colonies or biofilm. But they re self-sufficient. Since the time of formation of these organisms, they have constantly undergone evolution forming a more complex type of organisms.  

<u>The first protists appeared during the proterozoic age at about 1.8-1.5 billion years back</u>.

Hence <u>the most appropriate answer is 1.5 billion years ago i.e option (C)</u>

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5 0
3 years ago
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There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively. Allele 1 has a selection coe
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Answer:

0.8

Explanation:

There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively

Let's use GG to represent allele 1

Let's use gg to represent allele 2

So we can equally say that;

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= 1 - s    ( where s is the selection coefficient)

= 1 - 0.2

= 0.8

6 0
3 years ago
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