Phenotype frequency is the number of individuals in a population that have a specific observable trait or phenotype.
Option B is correct Archaebacteria are prokaryotes. They do not possess a nuclear membrane.
Hope this helped:)
Some of the things observed when a human red blood cell is placed under a microscope are:
- They have a donut shape
- They look like biconcave discs
- The presence and/or absence of a nucleus
<h3>What is a Microscope?</h3>
This refers to the lab tool that is used to view very small objects in detail to find out their properties.
Hence, we can see that although your question is incomplete, a general idea of things that can be observed when a human red blood cell is placed under a microscope was discussed.
Read more about microscopes here:
brainly.com/question/13520094
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It is A the Answer mate. (: