Genetics and Hereditary Disorders Blog
The term was originally used to describe developmental effects on morphological characters, but is now more broadly used to describe all phenotypic responses to environmental change, such as acclimation (acclimatization), as well as learning. … What is an example of a phenotypic plasticity? Phenotypic plasticity refers to the ability of a genotype to express different …
In the fields of molecular biology and genetics, a genome is all genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The genome includes both the genes (the coding regions) and the noncoding DNA, as well as mitochondrial DNA and chloroplast DNA. Is genomic DNA the same …
The Hardy–Weinberg principle relies on a number of assumptions: (1) random mating (i.e, population structure is absent and matings occur in proportion to genotype frequencies), (2) the absence of natural selection, (3) a very large population size (i.e., genetic drift is negligible), (4) no gene flow or migration, (5) … What are the key components …
An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous. When you have two different alleles of a gene it is called? An organism which has two different alleles of …
What are the characteristics of a person with Aspergers? 10 Characteristics of a Person with Asperger’s Syndrome Intellectual or Artistic Interest. Speech Differences. Delayed Motor Development. Poor Social Skills. The Development of Harmful Psychological Problems. Detail-oriented. Persistence. Not Socially-driven. How does Asperger’s affect you? Asperger’s Syndrome is a developmental disorder that results in communication and …
The Great apes — orangutans, chimpanzees and gorillas — all have one additional set of chromosomes compared to humans, with a diploid number of 48 and a haploid number of 24. Do apes have 48 chromosomes? Based on fossil evidence and comparative anatomy, Charles Darwin proposed that humans and great apes–which include chimpanzees, gorillas, and …
1931 in genetics, from German allel, abbreviation of allelomorph “alternative form of a gene” (1902), coined from Greek allel- “one another” (from allos “other;” from PIE root *al- (1) “beyond”) + morphē “form,” a word of uncertain etymology. Who came up with the word allele? The word “allele” is a short form of allelomorph (“other …
Is there a gene therapy for Down syndrome? New Genetic Therapy Could Erase Down Syndrome The journal Nature reports that researchers may have found a way to correct the chromosome defect that causes Down syndrome, though it will be years before it could be used as a therapy. Can Down syndrome be genetically modified? Down …
The human genome contains billions of pieces of information and around 22,000 genes, but not all of it is, strictly speaking, human. Eight percent of our DNA consists of remnants of ancient viruses, and another 40 percent is made up of repetitive strings of genetic letters that is also thought to have a viral origin. …
What is the result of meiosis? Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. … The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. …