Why biologists use comparative method, Biology

Assignment Help:

Why Biologists use Comparative Method?

Biologists are frequently interested in determining whether traits are functionally correlated. For example, do plants that are pollinated by birds tend to have red flowers much more often than those plants which are pollinated by other agents? Showing that a statistically major correlation between traits exists is sufficient to depict that the traits are usually related. A correlation among traits may have arisen not as they are functionally related but because they are historically (phylogenetically) related. Throughout the last two decades, comparative biologists have developed increasingly sophisticated methodologies termed collectively as the comparative method to take history into account. In a current survey, Freckleton et al. note that "Eighty-eight percent of data sets contained at least one character that displayed significant phylogenetic dependence and 60% of characters complete (pooled across studies) showed important proof of phylogenetic association". Phylogenetic history, and therefore, the comparative method, matters.


Related Discussions:- Why biologists use comparative method

Enzyme synthesis, Enzyme Synthesis Nitrate assimilating system in gene...

Enzyme Synthesis Nitrate assimilating system in general is known to show increase in nitrate uptake system and nitrate reductase system in the presence of nitrate. In other wo

How does aldosterone act, Q. How does aldosterone act and where is it produ...

Q. How does aldosterone act and where is it produced? Aldosterone is a hormone that acts upon the nephron tubules stimulating the resorption of sodium Therefore it contributes

Types of ecosystem, Types of Ecosystem Basically ecosystems are of two ...

Types of Ecosystem Basically ecosystems are of two types : terrestrial and aquatic. If you travel from plains to the mountains in the Himalayas, you notice significant changes

How many different gene types are possible, In lab rats, hair color and tex...

In lab rats, hair color and texture are controlled by two genes, the A gene for color and the B gene for texture. in both of these genes, the alleles show no dominance to each othe

How is heart contraction triggered, Q. How is heart contraction triggered? ...

Q. How is heart contraction triggered? Heart contraction is independent from neuronal stimulus although it can be modulated by the autonomous nervous system in the heart there

Phylum mollusca, PHYLUM  MOLLUSCA Definition  and Introduction B...

PHYLUM  MOLLUSCA Definition  and Introduction Basically bilateral and protostomial eucoelomate  eumetazoans  whose soft body (L. Millis  or molluscum= soft) is unsegmente

How hormonal status affects the bmr, How Hormonal Status affects the bmr? ...

How Hormonal Status affects the bmr? Thyroid status may be most important factor and can make differences of up to plus or minus 50% for hyperthyroidism or hypothyroidism, resp

How to get a stock primer concentration of 100µm, I have 30µg of a primer, ...

I have 30µg of a primer, whose molecular weight is 600. How much water should I add to get a stock primer concentration of 100µM?

Common features of eye and limb development, Common Features of Eye and Lim...

Common Features of Eye and Limb Development A comparison of the embryonic development of the very much different organs, the eyes and the limb, points to various interesting

What is electrocardiogarm, Q. What is Electrocardiogarm? Poor R-wave pr...

Q. What is Electrocardiogarm? Poor R-wave progression, in precordial leads, or q-waves in anterior leads. Intraventricular conduction defects, esqecially LBBB are common. There

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