The eight categories are: Domain which is the most inclusive level, that is to say, that the largest number of individuals are included in this level. There are three domains according to the cells types, and where they live. They are the Eukarya, Bacteria and Archaea. Domains are divided into kingdoms, they are the Plantae, protista, Eubacteria, Archaebacteria, Animalia and Fungi. After kingdoms the Phylum category comes, following Phylum is Class, various classes that are related will form a Phylum. The next category is Order, order is divided into Family, families are broken into Genus, where species are closely related between each other and finally the last category is Especies identifier, in this group there are unique characteristics that will identify a specie. With this classification we can see that we go from global groups to more specifics ones as the classification avances.

8 0

2 years ago

ancestors of giraffes with shorter necks could not reach branches high up in trees for food. this led to selection for longer-ne

hichkok12 [17]

With shorter necks, giraffe ancestors could not reach food-containing branches on tall trees. This resulted in the directional selection of giraffes with longer necks.

<h3>Why is choosing a direction necessary? </h3>

It nearly appears obvious that the giraffe's long neck developed as a result of a lack of food in the lower branches of trees. The giraffe has a significant advantage because it is taller than any other mammal and can feed where few others can.

When compared to modern giraffes, the giraffe's ancient predecessors had a shorter neck. The plants that were lying at a higher level were inaccessible to them. Giraffe phenotypes have changed in various ways, and now have long necks to reach vegetation that is higher up. The extreme form is chosen above other features in directional selection. It was decided to choose the long-necked giraffe over the short-necked.

To know more about direction selection for longer necked giraffes visit:

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7 0

1 year ago

A 100% B. 25% c. 50% D.75%

tekilochka [14]

Hey there what is your question?

3 0

3 years ago

The process of diffusion and active transport are both used to

solong [7]