Understanding the Principle of Independent Assortment in Genetics
#Alleles, #Chromosome, #CrossingExperiment, #DihybridCross, #Gene, #GregorJohannMendel, #Heterozygous, #IndependentAssortment, #LawOfSegregation, #Mendel, #Segregation, #Traits #Genetics In the intricate world of genetics, where traits are passed down from generation to generation, one fundamental principle governs the inheritance of multiple traits simultaneously: the Principle of Independent…
Navigating the Genetic Lexicon: Understanding Key Terminology in Genetics
#Alleles, #Chromosomes, #DNA, #DominantTraits, #Gene, #GeneticTerminology, #GeneticVariation, #GeneticsTerminology, #Genotype, #HomologousRecombination, #Mutations, #Nucleotides, #Phenotype, #RecessiveTraits #Genetics Genetics is a fascinating field that explores the blueprint of life encoded within our DNA. However, delving into this complex world often feels like deciphering a cryptic language…
#Human ancestry has been shaped by mixing and matching #alleles, show two recent studies.
Definitions 🧵:
A #haplogroup is a combination of #alleles that tend to be inherited together.
An #allele is a variation of the same sequence of nucleotides at the same place on a DNA molecule.
#Haplogroups pertain to a single line of descent. As such, individual membership of a haplogroup relies on a small proportion of the #genetic material possessed by that individual.
Mothers pass on mitochondrial #DNA unmixed to all their children; so the #ancestry can be traced along the maternal line.
It turns out that a section of our #DNA that we received from Neanderthals is particularly associated with outcomes (mild, severe) of #COVID19 infections.
This paper outlines an approach ranging from population genetics to functional #genomics in which the researchers identified four important #alleles and their likely #regulatory function.
Title: "Regulatory dissection of the severe #COVID-19 risk locus introgressed by #Neanderthals" (Jagoda et al. 2023)
On the usefulness of the #SelfishGene metaphor popularized by #RichardDawkins in an eponymous #book:
"An Idea With Bite", Aeon (https://aeon.co/essays/why-the-selfish-genes-metaphor-remains-a-powerful-thinking-tool).
#Gene #Evolution #Chromosome #Darwin #Dawkins #CharlesDarwin #Mendel #Alleles #MolecularBiology #Genetics #Biology
