What is an evolutionary tree, Biology

Assignment Help:

What is an evolutionary tree? Is there a precise evolutionary tree known by science that explains the emergence and origin of every type of living being?

Evolutionary tree is the pictorial and schematic showing of evolutionary relations among species of living beings in which the trunk (or a preceding branch) shows common ascendants of species and groups of living beings that are distributed along its branches according to hypothesis on their origin. For instance, today it is admitted that birds and mammals are two distinct branches of the similar preceding reptile branch.

Biology cannot assure a exact evolutionary tree (phylogeny) on the species of living beings that live or have lived in our planet. There are many data to be discovered and many knowledge gaps to be filled. One of the most promising methods to study phylogeny is the comparison of DNA molecules from different groups of living beings researching similarity and dissimilarity in nucleotide sequences that may show more or less relatedness among species.

 


Related Discussions:- What is an evolutionary tree

Explain the term - seashore rhythm test, Explain the term - Seashore Rhythm...

Explain the term - Seashore Rhythm Test This test consists of 30 pairs of rhythmic patterns. The task is to judge whether the two members of each pair are the same or different

State the amount of intracellular chloride, A complete motor neuron is remo...

A complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline.  The neuron is healthy; it has a stable resting voltage of -70 mill

Foot-and-mouth disease, Foot-and-mouth disease Foot-and-mouth disease ...

Foot-and-mouth disease Foot-and-mouth disease (FMD) is an extremely contagious viral disease of cloven footed animals most notably cattle, pig and sheep. It is well known for

Sinus venarum, The interior of the right atrium has a rough anterior part, ...

The interior of the right atrium has a rough anterior part, the atrium proper and a smooth part called the sinus venarum. Also it has an appendage called the auricle. All the large

How many carbon dioxide molecules are liberated, How many carbon dioxide mo...

How many carbon dioxide molecules are liberated after each cycle of the Krebs cycle? For a single glucose how many carbon dioxide molecules were already liberated by the aerobic re

Explain malnutrition, Explain Malnutrition Malnutrition, impaired immun...

Explain Malnutrition Malnutrition, impaired immunity and infection can form a triad or vicious cycle, as illustrated in Figure, which works synergistically and thus worsens the

Define role of buffer in electrophoresis, Define Role of Buffer in Electrop...

Define Role of Buffer in Electrophoresis? Buffer ions have a two-fold purpose in electrophoresis, they carry the applied current, and they fix the pH at which electrophoresis i

Seed structure, why mung beans has no endosperm while castor bean and maize...

why mung beans has no endosperm while castor bean and maize seed has?

Define the techniques of instrument retrieval, Define the Techniques of Ins...

Define the Techniques of Instrument Retrieval Endo Extractor (Brasseler) a. Hollow tube bonded to coronal tip of separated instrument by cyanoacrylate adhesive, with

Phylum:Echinodermata , What classifies an animal into the Echinodermata phy...

What classifies an animal into the Echinodermata phylum?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd