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erma4kov [3.2K]
3 years ago
15

2. What were the earliest organisms to evolve?​

Biology
1 answer:
zavuch27 [327]3 years ago
7 0

Answer:

Both bacteria and blue algae are prokaryote organisms, meaning that they do not have a differentiated nucleus, and therefore they are more primitive. But blue algae are able to perform photosynthesis and so we can believe that the first forms of life on Earth date even further back than 3 and a half billion years ago.

Explanation:

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Which of the following scientists can be identified as a taxonomist?
liraira [26]

Answer: Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world. Using morphological, behavioral, genetic and biochemical observations, taxonomists identify, describe and arrange species into classifications, including those that are new to science.

6 0
3 years ago
Because the genetic backgrounds of _____________ twins are identical, researchers can conclude that variations in their behavior
Kitty [74]

Answer:

Monozygotic

Explanation:

Monozygotic twins are formed by fertilization of single sperm and single egg but during cleavage process they separate out and serve as individual organisms. After their birth, environmental factors may influence variation in their behavior even though they were identical clones of each other. Thus, it may conclude that, environmental factors may influence variation among monozygotic twins.        

4 0
3 years ago
Which of the following components of natural selection operates differently in artificial selection?
tino4ka555 [31]

Answer:

d. Populations have the potential to grow to very large numbers

Explanation:

Natural selection and artificial selection both cause changes in animals and plants. However, the natural selection happens naturally, but selective breeding (artificial selection) only occurs by humans interventions. Natural selection has four components:

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  • Differential survival and reproduction.
6 0
3 years ago
In your own words, what is the definition for the word Cytokinesis?
AnnyKZ [126]

Answer: division of a cell at the end of mitosis or meiosis

Explanation: cuz im smart

8 0
3 years ago
Read 2 more answers
A scientist was observing an unknown slide under an electron microsocope; he found a cell without a well-defined nucleus but wit
Blababa [14]
Let's eliminate this one by one.

Animal cell does not have walls. So we can eliminate The third option.

Plant cells does have walls, but they also have well-defined nucleus. So we can eliminate the second option

The leave : A. Prokaryotic as the answer

hope this helps


8 0
3 years ago
Read 2 more answers
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