SpeciationMicroevolution and MacroevolutionIntroductionMicroevolutionSpeciationMacroevolution According to the theory of natural selection, speciation is the creation of new species by genetic…
(Encyclopedia) cline, in biology, any gradual change in a particular characteristic of a population of organisms from one end of the geographical range of the population to the other. Gradients of…
(Encyclopedia) Wexler, Nancy, 1945–, American geneticist and neuropsychologist, b. Washington, D.C., Ph.D. Univ. of Michigan, 1974. After her mother was diagnosed with Huntington's disease in 1968,…
(Encyclopedia)
CE5
Replication of strands of DNA
CE5
nucleic acid, any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the…
Must a Jury Decide the Death Penalty?The Supreme CourtPunishing the CriminalsIs the Death Penalty Cruel and Unusual Punishment?Must a Jury Decide the Death Penalty?Are Penalties Required in “…
(Encyclopedia) genetic testing, medical screening for genetic disorders, by examining either a person's DNA directly or a person's biochemistry or chromosomes for indirect evidence. Testing may be…
Getting the Word OutThe Supreme CourtElecting Our LeadersElection Machinery That WorksRemapping DistrictsPaying for CampaignsGetting the Word OutSwitching Parties Another key controversy…
(Encyclopedia) Green, Hetty, 1835–1916, American financier, b. Henrietta Howland Robinson, New Bedford, Mass. She inherited a large fortune from her father and invested it so shrewdly that she was…
