GIVE AN ACCOUNT OF THE ROLES OF GENETIC MUTATIONS AND MEIOSIS IN GENERATING GENETIC DIVERSITY 20 Essay - 304 Words

TOP ESSAY WRITING SERVICES REVIEWS


Rank
Service
General
Prices

1
  • Since 2008
  • Free revisions
  • Money-back guaranty
  • Up to 5% for the first order. Up to 15% for the orders starting from 2nd

from $9.97/pp

visit site

2
  • Since 2009
  • Free title page, revisions
  • Discount policy
  • Satisfaction guarantee
  • More than 100 000 orders delivered

from $9.97/pp

visit site

3
  • Since 2010
  • PhD holding authors only
  • SMS notifications & VIP support
  • Discount policy

from $22/pp

visit site

4
  • Since 2010
  • 24/7 support team
  • More than 500 writers
  • Money-back guaranty
  • Up to 15% discounts

from $9.97/pp

visit site

 

StudyMode - Premium and Free Essays, Term Papers & Book Notes

Products

About

@2017 studym.wressy.com

Exclusive

  1. Home >
  2. Essays >
  3. GIVE AN ACCOUNT OF THE...

GIVE AN ACCOUNT OF THE ROLES OF GENETIC MUTATIONS AND MEIOSIS IN GENERATING GENETIC DIVERSITY (20)

Only available on StudyMode Open Document Save to my library

Please sign up to read full document.

Text Preview GIVE AN ACCOUNT OF THE ROLES OF GENETIC MUTATIONS AND MEIOSIS IN GENERATING GENETIC DIVERSITY (20)
Marking Scheme
Synopsis, Clarity, English Language, sequence of events (3)
Introduction (1), Scientific content (15), Conclusion (1).
Introduction: Genetic Diversity: Every individual has a unique genotype. This is equal to the combination of alleles of all its genes.
The greater the number of genotypes in a population, the greater the genetic diversity. Genetic mutations produce new alleles of genes that increase variation- Gene mutation are permanent changes in nucleotide sequence in codons of the gene/ produced when DNA replicates/ alters the AA sequence in the polypeptide and therefore the structureand function of the polypeptide or protein/ may be harmful e.g. cystic fibrosis or beneficial e.g. antibiotic resistance in bacteria. (3)

Roles in generating genetic diversity: Increases the number of alleles and so the range of possible genotypes and phenotypes in the population e.g. consider 1 gene with 2 alleles:- 2 phenotypes may result.

But 1 gene with 3 alleles e.g. ABO blood system (including co-dominance) results in 4 phenotypes: blood groups A,B, AB, and O blood groups. Mutations occur at random. The mutated form of the gene is passed on every time the DNA replicates (4)

Chromosome Mutations e.g. Aneuploidy and Polyploidy lead to different dosage effects of particular genes in the genotypes and therefore to genetic diversity.
Meiosis: Overview of meiosis with explanation of crossing over and independent assortment. (4) Role of meiosis in generating genetic diversity: crossing over and independent assortment mixes up existing combinations of alleles of all genes to increase range of genotypes and therefore genetic diversity). Increase in genetic diversity of gametes results. Fertilization results in random fusion of gametes; this increases genetic diversity even further in the population. (4) Conclusion: Maintenance of genetic diversity is essential... Show More

Please sign up to read full document.

YOU MAY ALSO FIND THESE DOCUMENTS HELPFUL

POPULAR ESSAYS

Agbekor the african dance style Prosperity meaning Vietnam War Essay Suffering Essay Odysseus Essay Black people Essay Education Essay Wine Essay

Share this Document

Cancel Send

Join millions of other students and start your research

Become a StudyMode Member

SIGN UP - IT's FREE

Have a great research document you think will help inspire other StudyMode members?

Share your document

Upload Now

Get full access to more research and tools for only $0.33/day

Upgrade your Membership

GET PREMIUM @2017 studym.wressy.com Legal Site Map Advertise studym.wressy.com, Online Education, Hollywood, CA

More great study tools:


{"hostname":"studym.wressy.com","essaysImgCdnUrl":"\/\/images-study.netdna-ssl.com\/pi\/","useDefaultThumbs":true,"defaultThumbImgs":["\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_1.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_2.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_3.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_4.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_5.png"],"thumb_default_size":"160x220","thumb_ac_size":"80x110","isPayOrJoin":false,"essayUpload":false,"site_id":1,"autoComplete":false,"isPremiumCountry":false,"userCountryCode":"US","logPixelPath":"\/\/smhpix.com\/pixel.gif","tracking_url":"\/\/smhpix.com\/pixel.gif","cookies":{"unlimitedBanner":"off"},"essay":{"essayId":39124072,"categoryName":"Periodicals","categoryParentId":"17","currentPage":1,"format":"text","pageMeta":{"text":{"startPage":1,"endPage":2,"pageRange":"1-2","totalPages":2}},"access":"premium","title":"GIVE AN ACCOUNT OF THE ROLES OF GENETIC MUTATIONS AND MEIOSIS IN GENERATING GENETIC DIVERSITY (20)","additionalIds":[13,160,7,93],"additional":["Health \u0026 Medicine","Health \u0026 Medicine\/Conditions","Education","Education\/Greek System"],"loadedPages":{"html":[],"text":[1,2]}},"user":null,"canonicalUrl":"http:\/\/studym.wressy.com\/essays\/Give-An-Account-Of-The-Roles-39124072.html","pagesPerLoad":50,"userType":"member_guest","ct":10,"ndocs":"1,500,000","pdocs":"6,000","cc":"10_PERCENT_1MO_AND_6MO","signUpUrl":"https:\/\/studym.wressy.com\/signup\/","joinUrl":"https:\/\/studym.wressy.com\/join","payPlanUrl":"\/checkout\/pay","upgradeUrl":"\/checkout\/upgrade","freeTrialUrl":"https:\/\/studym.wressy.com\/signup\/?redirectUrl=https%3A%2F%2Fstudym.wressy.com%2Fcheckout%2Fpay%2Ffree-trial\u0026bypassPaymentPage=1","showModal":"get-access","showModalUrl":"https:\/\/studym.wressy.com\/signup\/?redirectUrl=https%3A%2F%2Fstudym.wressy.com%2Fjoin","joinFreeUrl":"\/essays\/?newuser=1","siteId":1,"facebook":{"clientId":"306058689489023","version":"v2.9","language":"en_US"}} tracking img