Answer:
The limitation of phylogenetic species concept is b. Evolutionary histories are not known for all species.
Explanation:
The species that share a common ancestor and have similar traits and functions are grouped together as a result of the phylogenetic species concept. The phylogenetic species concept shows a unique evolutionary history of one organism with another of the same group. The major set back in the phylogenetic species concept is the lack of evolutionary histories for certain species. So, these organisms cannot be grouped according to the phylogenetic species concept.
Answer:
b. 80g
Explanation:
Three cycles of PCR would produce 3 doublings of the amount of DNA.
Cycle 1: 10x2 = 20pg
Cycle 2: 20x2 = 40pg
Cycle 3: 40x2 = 80pg
This can also be worked out for large cycle numbers by final mass = starting mass x 2ⁿ, where n is the number of cycles.
Taxonomy<span> produces a hierarchy of groups of organisms;A </span>phylogenetic tree<span> is a hypothesis that depicts the evolutionary..
</span>Cladistics <span>is an approach to </span>biological classification<span> in which </span>organisms<span> are categorized based on shared derived characteristics that can be traced to a group's </span>most recent common ancestor<span> and are not present in more distant ancestors. Therefore, members of a group are assumed to share a common history and are considered to be closely related.</span><span>
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Plowing with machines, irrigating with drip systems, and these are all modern agricultural methods.
