Does the environment exert an influence on the phenotype, Biology

Assignment Help:

Does the environment exert an influence on the phenotype?

The phenotype may be altered (compared to the original situation conditioned by its genotype) by nongenetic means, instances: some hormones may cease to be secreted due to diseases but the genes that determine their secretion remain intact, a person can go to a hairdresser and change the color of his/her hair, plastic surgery can be performed to alter facial features of an individual. The colored contact lenses may be worn but a plant can grow beyond its genetically conditioned size by application of the phytohormones.

The Revealing cases of environmental influence on phenotypes are observed in monozygotic twins that have grown in various places. Generally these twins present extremely distinct phenotypical features due to the environmental and cultural differences of the places where they lived and to their different individual experiences in life.

(The Biologically programmed phenotypical changes like nonpathological changes of the skin color caused by sunlight exposure, tanning, or the variation of the color of some flowers according to the pH of the soil cannot be considered independent from genotype. In reality these changes are planned by the genotype as natural adaptations to environmental changes.)

 


Related Discussions:- Does the environment exert an influence on the phenotype

Which process is called "reverse osmosis", When water containing impurities...

When water containing impurities is forced against a filter that allows only water through, this process is called "reverse osmosis". Why is this a good description of what is happ

Explain about the protein-energy ratio, Explain about the Protein-Energy Ra...

Explain about the Protein-Energy Ratio (NDP Cal%)? Platt and his colleagues (1961) are largely responsible for the introduction of the ratio of protein energy to total energy (

Syncytial theory - metazoa, Syncytial Theory - Metazoa This theory su...

Syncytial Theory - Metazoa This theory suggests that the ancestral metazoan was at ,first Syncytial in structure but later became cellularised by formation of cell membranes

Nitrogen fixation in soil, what is the process of nitrogen fixation in soil...

what is the process of nitrogen fixation in soil by bacteria

Connecting implants to natural teeth, Connecting implants to natural teeth ...

Connecting implants to natural teeth and use as pier abutments The issue of connecting implants and teeth to support a fixed prosthesis is controversial and unresolved. The inh

Water potential, why psi g is ignored in water potential of plants?

why psi g is ignored in water potential of plants?

Planning the nursing care for dysentry, Planning the Nursing Care   1) ...

Planning the Nursing Care   1) Maintain hydration and electrolyte balance.  2) Administer accurate and adequate antibiotics drugs.  3) Prevent the spread of infection.

Explain indications for surgery of congenital pulmonary, Explain Indication...

Explain Indications for Surgery of Congenital Pulmonary Stenosis ? Interventional treatment is required for all neonates presenting with critical pulmonary valvar stenosis. Thi

Diagnosis and treatment of myocarditis, Diagnosis X-ray chest show...

Diagnosis X-ray chest shows cardiomegaly.  ECG shows conduction defect, low voltage QRS, atrial and ventricular disrhythrnias.  Echocardiogram - decreased LV cont

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