i want know the meaning of this word  genotype and what it all about?
481882
Simply;\nPhenotype means that how you look like:)\nGenotype means that how your DNA look like:)\nMore official;\nGenotype refers to the genetic make-up of an organism or a virus.\nAnd the official mean of this term;\nThe entire genetic identity of an individual, including alleles, or gene forms, that do not show as outward characteristics
63661
i found an entry in pubmed for an article published in the journal GeneWatch in 1999 titled:  Eugenics, euthenics, euphenics: the underlying issue is that someone decides, based on values, which characteristics should be part of society and which are not.\n\nso that seems like a reasonable statement of how the terms are related.  here is the citation if you want to read the article:   Genewatch. 1999 Jun;12(3):8-10.\n\neugenics is when someone decides what traits are positive, and should be passed on to the next generation - and breeding policies are made in accordance with that.  (of course, this can be a personal policy - you marry a smart girl because you want your kids to be smart - or a coerced social policy, as in the forced sterilization of jews and other unwanteds under nazi germany).\n\neuphenics and euthenics on the other hand are not about improving future generations, but about improving the current one.  euphenics is a method for improving a person's biological characteristics without touching their genetic characteristics. \n\nthe difference between eugenics and euphenics is like the difference between genotype and phenotype.  euphenics addresses the expression of genetic content whereas eugenics addresses the genetic content itself.\n\neuthenics is kind of a dorky word that's about improving people by altering their environment and allowing them to adapt, rather than altering their biology directly.\n\nhere is the article in nature from 1963 where the term euphenics is coined:\nhttp://profiles.nlm.nih.gov/BB/A/B/I/E/_/bbabie.pdf\n\ncheers!
31566
It's "a disease caused by abnormal expression of one or more genes in a person causing a clinical phenotype."\n\nIt's genetic because it's not something that you can get from someone else in the traditional meaning ("I caught a cold from my wife", etc). Nor can someone with a genetic disorder infect someone else ("I infected my brother with chicken pox").
560142
One of each pair is derived from either parents. Also due to the diploid nature of chromosomes genotypes as homozygous dominant, homozygous recessive and heterozygous can be found. Thus a recessive character can be avoided to the maximum.
697176
Good question.  Calling something Mendelian implies that it is influenced by ONE AND ONLY ONE GENE.  As far as using the word "trait", very few "traits" are influenced by just one gene (i.e. hair color, eye color, skin color, height etc.)   These things are influenced by many genes and often environmental factors.\n\nNow, when you talk about expression of genes, we think of Mendelian disorders.  There are many many single gene disorders, the most common being CF (cystic fibrosis).  Basically if a mutation is inherited dominantly, one copy of a mutation means the phenotype will ALWAYS BE EXPRESSED based on that one mutated gene.  Recessive of course (like CF), means both copies of a gene must be mutated to express the phenotype.\n\nCompare this to something like type I diabetes.  One mutation in a gene associated with diabetes doesn't guarantee that someone will have this disease.  Nor do 2 mutations, or 3, etc.  The term we use for this is penetrance by the way.  Mendelian inheritance means a penetrance close to 100% (meaning every time the given gene is expressed, a phenotype associated with it will be expressed).
922882
Hi Meredith,\n\nExcellent topic. The keyword you are therefore looking for on the Internet is "eugenics", i.e.  the study of methods of improving genetic qualities by selective breeding. (Remember the name of one of the protagonists in the movie : Eugene - rings a bell? )\n\nThere are a lot of articles on that topic according to google. Try this one for example: http://theoccidentalquarterly.com/vol4no1/toq-editnote4-1.html \n\nGood luck !
64594
its from the greek word Genea meaning "generation,race"
272838
1 is false. It is the other way around. Genotype determines phenotype.
135811
gene I think is what you are looking for. Not sure the question makes sence.
856635
1. Many traits are similar between all organisms.  Also it is believed that we all had a common organism.  This would mean that we all inherited the same gentic code.  Slight variations in this code make use different.\n\n2.  AUG,  AAU, GGC, & UGC \n\n3. UAC, UUA,  CCG,  ACG\n\n4. Methionine,  Asparagine, Glycine  & Cysteine \n\n5.  "Start" codon  I tells the ribosome to start reading the RNA and the tRNA to start bringing over amino acids.
692071
Homozygous genotype is when youre alleles are AA, Homozygous means the same-- and the capital letters represent dominant alleles.\nits dominant because only DOMINANT alleles are represented (AA)\n\nHeterozygous genotype's occur when you have one dominant allele and one recessive.. like Aa, because lower case is recessive.\n\nif the heterozygous genotype is recessive.. the genotype will not be seen in the phenotype. \nIf it is dominant .. the uppercase letter (the dominant allele) will be shown in the phenotype.\n\nUsually a heterozygous genotype is recessive- but it depends on the first filial generation\n\nthis is all easier to explain on a punnets sqaure..email me if you have more questions! emo4@uakron.edu
39991
Alleles are different 'forms' of the same gene.\n\nFor example, there are three alleles of the gene for blood groups; alleles A, B and O.\n\nIn diploid organisms like ourselves we have two complete sets of genes, so there are various combinations of alleles. One allele is inherited from the mother and one from the father.\nAA - blood group A\nAO - blood group A (because A is dominant to O)\nBB - group B\nBO - group B (B dominant to O)\nAB - group AB (alleles are codominant - equal dominance)\nOO - group O\n\nGeneologically, we can follow the inheritance of various characteristics (determined by alleles) and similarly blood groups can be used to eliminate or confirm parentage.\n\nThe 'classic' geneological example is the family tree of Queen Victoria of Great Britain. This follows the inheritance of the sex-linked gene for haemophilia.
1145304
genetic drift actually refers to the tendancy for weaker alleles to disappear naturally over time.\n\nSelective breeding and eugenics are purposely removing (or preventing the succession) of those alleles in the population
800901
Mendelian inheritance (or Mendelian genetics or Mendelism) is a set of primary tenets relating to the transmission of hereditary characteristics from parent organisms to their children; it underlies much of genetics. They were initially derived from the work of Gregor Mendel published in 1865 and 1866 which was "re-discovered" in 1900, and were initially very controversial. When they were integrated with the chromosome theory of inheritance by Thomas Hunt Morgan in 1915, they became the core of classical genetics.\nContents
111500
alleles are genes.  basically, different types of genes are alleles.  for example, everyone has a gene for hair color.  however, not everyone has the same allele for hair color.  come have the "brown allele" while others have the "black allele" and so on.  a simple way of picturing this is that genes are ice cream scoops and the alleles are the different flavors.
498140
A hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes.
549913
in general,\nphenotype = genotype + environment\n\nor in layman's terms,\nman = genes + lifestyle