.
.
(from ancient greek: γόνος / gonos)
.
-a gene is a ‘locus’ (or ‘region’) of DNA which is made up of ‘nucleotides’ and is the molecular unit of ‘heredity’-
.
(the term was introduced by danish botanist, plant physiologist, and geneticist ‘wilhelm johannsen’ in ‘1905’)
(the transmission of genes to an organism’s offspring is the basis of the inheritance of phenotypic traits)
(these genes make up different DNA sequences called ‘genotypes’)
(‘genotypes’ along with environmental and developmental factors determine what the ‘phenotypes’ will be)
(most biological traits are under the influence of ‘polygenes’ (many different genes) as well as gene–environment interactions)
(some genetic traits are instantly visible, such as ‘eye color’ or ‘number of limbs’, and some are not, such as ‘blood type’, ‘risk for specific diseases’, or the thousands of basic biochemical processes that comprise life)
(genes can acquire mutations in their sequence, leading to different variants, known as alleles, in the population)
(these alleles encode slightly different versions of a protein, which cause different phenotypical traits)
(usage of the term “having a gene” (e.g., “good genes,” “hair colour gene”) typically refers to containing a different allele of the same, shared gene)
(genes evolve due to ‘natural selection’ or ‘survival of the fittest’ of the ‘alleles’)
(the concept of a ‘gene’ continues to be refined as new phenomena are discovered)
(for example, regulatory regions of a gene can be far removed from its coding regions, and coding regions can be split into several exons)
(some viruses store their genomein RNA instead of DNA and some gene products are functional non-coding RNAs)
.
(therefore, a ‘broad, modern working definition’ of a ‘gene’ is any ‘discrete locus’ of ‘heritable, genomic sequence’ which affect an organism’s traits by being expressed as a ‘functional product’ or by ‘regulation’ of ‘gene expression’)
.
.
*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
.
.
.
.
.
💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
.
.
*🌈✨ *TABLE OF CONTENTS* ✨🌷*
.
.
🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥