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

What is mucic acid test and its principle, What is Mucic Acid Test and its ...

What is Mucic Acid Test and its principle? This is a specific test for galactose and is given by galactose as well as lactose, which is made up of galactose and glucose. Pr

Homologous proteins - amino acid sequence in fasta format, Please answer th...

Please answer the following question on Sequence Y: Protein databases 1. What sequence from which organism is this sequence most similar to? 2. Can you find any homo

Which of these lists contains the four postulates, Which of these lists con...

Which of these lists contains the four postulates  of natural selection? Which of these lists contains the four postulates of natural selection? Uniform population, heritable trait

Asexual reproduction that occurs in hydras, Q. What is the kinds of asexual...

Q. What is the kinds of asexual reproduction that occurs in hydras? Hydras reproduce asexually by budding.

Gastrulation, Gastrulation  Gastrulation is the process through whic...

Gastrulation  Gastrulation is the process through which the presumptive areas of organ specific rudimetns present on the surface of blastula move to their specific position

What are the types of reproduction that occur in fungi, What are the types ...

What are the types of reproduction that occur in fungi? In fungi there are asexual and sexual reproduction. Fungi replicate asexually by fragmentation, gemmation and sporulatio

Meiosis comprises two separate divisions, All of the following make meiosis...

All of the following make meiosis different from mitosis; EXCEPT A. Meiosis comprises two separate divisions. B. Meiosis only occurs during embryonic development. C. Chromoso

Thermal stratification - lake ecosystem, Thermal Stratification - Lake Ecos...

Thermal Stratification - Lake Ecosystem Shallow lakes show no thermal stratification as their waters are well mixed, resulting in uniform temperature throughout. However lakes

Signify the difference between bryophytes and tracheophytes, Which of the b...

Which of the below determines the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) Tracheophytes can make their own food

Explain dual energy x-ray absorptiometry (dexa), Explain Dual Energy X-ray...

Explain Dual Energy X-ray Absorptiometry (DEXA)? Dual energy X-ray absorptiometry (DEXA) is a relatively new technology that is being identified as a reference method for bo

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