Essays Tagged: "Phenotype"

Gene Therapy

than using the traditional methods of using agents that interact with gene products to alter their phenotype, gene therapy may be the key to modify specific genes and provide a definitive cure to whi ...

(7 pages) 227 1 4.6 Apr/2002

Subjects: Science Essays > Biotechnology

Translation and Protein Synthesis- the role of various RNA and the process of synthesis

d the release of different types of polypeptides from ribosomes all over the body links genotype to phenotype in the resulting organism. The individual types of RNA (ribonucleic acid) each play their ...

(3 pages) 52 0 5.0 Nov/2003

Subjects: Science Essays > Biology

Fragile X Syndrome

verman, 1991; Warren and Nelson, 1994]. Affected females exhibit a similar, but usually less severe phenotype.The diagnosis of fragile X syndrome was originally based on the expression of a folate-sen ... t in the pathogenesis of the syndrome. Although it is clear that methylation status plays a role in phenotype, its effect on clinical severity is somewhat unpredictable, especially in females.DNA stud ...

(5 pages) 61 0 4.3 May/2004

Subjects: Social Science Essays > Psychology

Biology 10 Notes on Genes, Chromosomes, Mendel's Laws, and Mitosis vs. Meiosis

where there is no pair in the X chromosome (often termed XO). Various physical changes occur in the phenotype including webbing of the neck and sterility. Klinefelter's Syndrome: Partial triplo ...

(2 pages) 56 0 2.3 Sep/2004

Subjects: Science Essays > Biology

Biology 10 Notes on Complicated Patterns of Inheritance.

More Complicated Patterns of InheritanceIncomplete DominancePhenotype of heterozygous is different from homozygous parentsIntermediate btwn two parentsNeither a ... d cellsType A = antigen AType B = antigen BType AB = antigen A & BType O = neither antigenBlood phenotype controlled by gene "I"3 different types of I: IA, IB, ii = recessiveGenotypes A Antigen B ... allelesCo-DominanceWhen they have 2 or more dominant allelesBoth dominant alleles are expressed in phenotypeBlood TypesABGene InteractionSingle trait controlled by 2 or more genes acting 2getherCoat ...

(1 pages) 28 0 0.0 Sep/2004

Subjects: Science Essays > Biology > Human Biology

Gene Mutations.

in the amount of an organism's genetic material and when a change in genotype produces a change in phenotype, the individual affected is said to be a mutant. A gene mutation involves a change in one ... ALLELES & THE EFFECT OF MUTAGENIC AGENTSMost gene mutations produce an inferior version of the phenotype, i.e. the majority of mutant alleles are recessive. If this results in death, then the alt ...

(2 pages) 36 0 2.0 Sep/2005

Subjects: Science Essays > Biology

Effect of Environment on Phenotype

Aim: To investigate the effect of one environmental factor on the phenotype of pea plantsBackground Information: Pea seeds are available with identical genetic inform ...

(2 pages) 20 0 0.0 May/2006

Subjects: Science Essays > Biology

Huntington's Chorea

ase, is a disease caused by abnormal expression of one or more genes in a person causing a distinct phenotype. There are a number of possible causes for genetic defects. They may be caused by a mutati ...

(5 pages) 43 0 5.0 Aug/2006

Subjects: Humanities Essays > Health & Medicine > Diseases


eans of agriculture. The technique for cloning livestock is called nuclear transfer. Currently, the phenotype of livestock is being altered to preferred traits. This technique has not been mastered an ...

(2 pages) 12 0 0.0 Mar/2001

Subjects: Science Essays > Genetics & Genome Projects

Natural Selection

"Random mating" is when mating is random, individuals pair by chance not by phenotype or genotype. In non-random mating allele frequency do not change in the population. In a ... ould be approximately .46 for A/B and .54 for a/b.        Population I deals with phenotype of size, where the individual can be either normal size or tiny. Population II deals with ... een or dark green. Population III combines the trait of color and size in one population where two phenotypes are possible. An individual can be either normal size/light green or tiny/dark green. A ...

(2 pages) 55 0 3.5 Oct/2001

Subjects: Area & Country Studies Essays

Biology Reports

cross (to a yellow-fruited plant) is a testcross (a cross beetween an individual with the dominant phenotype and a homozygous recessive parent). The progeny expected from such a cross (Ww x ww) are: ... : 1/2 yellow (ww) 9. In cattle the polled (hornless) condition (P) is dominant over the horned (p) phenotype. A particular polled bull is bred to three cows. With cow A, which is horned (), a horned ...

(5 pages) 14 0 0.0 Feb/2002

Subjects: Science Essays > Biology


(1 pages) 14 0 0.0 Nov/2007

Subjects: Science Essays > Biology


eptor gene can cause Leprechaunism, and the severity of the mutation determines the severity of the phenotype. Both male and female patients are affected by this disease. The disease is known as Lepre ... Turner's syndrome, Huntington's chorea and Porphyria These diseases do not have completely distinct phenotypes, but are related to the severity of insulin receptor mutation. The more severe the mutati ...

(6 pages) 2096 0 0.0 Feb/2008

Subjects: Humanities Essays > Health & Medicine > Diseases

Heritability And Intelligence

nce, no matter what the race, seem to be relatively similar in comparison with each other. A gene?s phenotype responds in a fashion influenced by the environment, as is seen for the color of skin or i ...

(2 pages) 35 0 5.0 Feb/2008

Subjects: Social Science Essays > Psychology

The Genetics of Drosophila Fruit Flies

whole cycle starts over again. The main purpose of this experiment was to determine and examine the phenotype after crossing fruit flies; to determine how many offspring will have red eyes, white eyes ... ale flies and black female flies were been crossed in two separate vials. The students examined the phenotype and sex of each fruit fly using a dissecting microscope. For control, only virgin female f ...

(3 pages) 39 0 3.0 Feb/2008

Subjects: Science Essays > Genetics & Genome Projects

Proteomics Techniques Overview

proteins was based on crude understanding of protein chemistry. The approach was observation of the phenotype or function to the genes responsible for the function and latter on the identification of ... ponsible for the function and latter on the identification of products that manifested the observed phenotype. This approach came to be known as ‘forward’ approach. With the advent of large ...

(13 pages) 19 0 0.0 Sep/2008

Subjects: Science Essays > Biotechnology


sm. The term black people are used in systems of racial classification for humans of a dark skinned phenotype, relative to other racial groups. Different societies apply different criteria regarding w ...

(4 pages) 3 0 0.0 Dec/2011

Subjects: Social Science Essays > Controversial Issues