51 results found

Search Results for: linked genes

Chromosomes X and Y and Sex Determination

Reviewed by: Mary Anne Clark, Ph.D. In humans, the normal chromosome complement is 46, consisting of 22 pairs of... Read More

Independent Assortment

Independent Assortment Definition Independent assortment refers to the genes or alleles that sort into the newly formed... Read More

Linked genes

Definition noun, singular: linked gene Genes that are inherited together with the other gene(s) as they are located on the... Read More

X-linked inheritance

Definition noun (genetics) Inheritance for genes on the X chromosome Supplement Sex chromosomes are not only relevant for... Read More

Polygenic inheritance

Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... Read More

X-linked

Definition adjective (genetics) That which is associated with the X chromosome Supplement The term X-linked is defined as... Read More

Y-linked gene

Definition noun, plural: Y-linked genes A gene located on the Y chromosome Supplement Y chromosome is the male chromosome of... Read More

Sex-linked gene

Definition noun, plural: sex-linked genes A gene located in the sex chromosome. Supplement In humans, the sex... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Gene

A gene is the fundamental, physical, and functional unit of heredity. The genes make up the sequences of DNA (genotypes).... Read More

Gene Regulation in Eukaryotes

Reviewed by: Mary Anne Clark, Ph.D. Eukaryotic Gene Structure In prokaryotes the DNA is located in the... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Y-linked inheritance

Definition noun (genetics) Inheritance for genes on the Y chromosome Supplement Sex chromosomes are not only relevant... Read More

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... Read More

Sex-linked trait

Definition noun, plural: sex-linked traits A trait genetically determined by an allele located on the sex... Read More

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that were initially... Read More

Genetic Mutations

Reviewed by: Mary Anne Clark, Ph.D. Genetic Mutations Genetic mutations are inherited variations in an... Read More

X linkage

Definition noun, plural: X linkages (genetics) A form of sex linkage involving particularly the X chromosome Supplement The... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Nucleosome

Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... Read More

Genotypic ratio

Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... Read More

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Sex-linked disorder

Definition noun, plural: sex-linked disorders A genetic disorder caused by or linked to gene(s) located in the sex... Read More

Family traits

When one thinks of family, they often think of persons who are blood-related to each other as parents to their children and... Read More

Mitochondrion

Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More

Polygenic disease

Definition noun An inherited disease determined by the effects of the simultaneous action or interaction of several... Read More

Cell wall

The cell is the structural, functional, and biological unit of all organisms. It is a membrane-bound structure containing... Read More

Sex linkage

Definition noun, plural: sex linkages A condition in which a trait or a phenotype manifesting apparently more frequently in... Read More

Y chromosome

Definition noun, plural: Y chromosomes The male-determining sex chromosome particularly in humans and other... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Punnett Square

Punnett Square Definition A tool that helps to show all possible allelic combinations of gametes in a cross of parents with... Read More

Blindness – Evolutionary regression? Maybe not!

The recent Netflix's hit flick, Bird Box, surely startled the viewers with the thrilling scenarios revolving around the... Read More

Monogenic disease

Definition noun An inherited disease determined by the interaction of a single pair of genes Supplement A monogenic disease... Read More

Recessive

Definition adjective (genetics) Of, or pertaining to, a gene (or allele) whose phenotypic expression is masked by a... Read More

Sucrose

Definition noun plural: sucroses su·crose, ˈsukɹoʊs A disaccharide with a chemical formula of C12H22O11 that occurs in... Read More

Maltose

Definition noun plural: maltoses mal·tose, ˈmɔːltəʊz A reducing disaccharide formed when two glucose monomers join... Read More

Glycogen

Definition noun plural: glycogens gly·co·gen, glī′kə-jən A multi-branched polymer of glucose, mainly produced in... Read More

Hallucination – Are we the only ones “seeing” things or animals hallucinate, too?

Hallucination is defined as perceiving something that seems real but in fact, it is not. Some references take it as a... Read More

Mosaicism

Cells often go through many divisions before they become a part of an organism’s genetic make-up. This leaves room for... Read More

Monogenic trait

Definition noun A trait produced by the effect of a gene or an allele Supplement A monogenic trait is a trait produced... Read More