______ discovered the principles of genetics before DNA, genes, and chromosomes were discovered.Multiple choice question.Griffith and AveryWatson and CrickMendelDarwin

______ formulated key principles of genetics before DNA, genes, and chromosomes were discovered.

Many 19th century scientists believed that natural selection always favored an optimal form, and therefore would tend to reduce or eliminate Blank______.Multiple choice question.genetic variationpopulation geneticsheterozygositygenetic equilibrium

Although Mendel did not know that homologous chromosomes separate during meiosis I such that the alleles of one gene are packaged into separate gametes, he developed the law of ______, which deduced this phenomenon.Multiple choice question.

The principle of motion economy was developed by Blank______.Multiple choice question.Elton Mayo's Hawthorne studiesFrederick HerzbergAbraham MaslowFrank and Lillian Gilbreth

The discovery of genes that contribute to embryonic development began a new field of biology calledMultiple choice question.comparative morphology biology.population demography.evolutionary developmental biology.molecular cellular biology.