Progenitor definition, a biologically related ancestor: a progenitor of the species. See more.

Systematically definition, in a focused, consistent, and methodical way:The report will help me analyze deficiencies within the company and systematically implement action plans to address them over time.Europol's Chief of Staff said that children are being systematically targeted for recruitment by criminal gangs. See more.

If two plants were crossed to produce a yellow and blue flower, and if the alleles of the gene responsible for petal color were dominant in nature, the flower produced by the progeny plant would either be yellow with blue spots or blue with yellow spots.

Atkins v. Virginia, 536 U.S. 304 (2002), is a case in which the Supreme Court of the United States ruled 6-3 that executing people with intellectual disabilities violates the Eighth Amendment's ban on cruel and unusual punishments, but states can define who has an intellectual disability. At the time Atkins was decided, just 18 of the 38 death penalty states exempted intellectually …

some of the progeny look like neither parent, but the ratio is wrong. 13 9 black: 3 brown: 4 golden (9 B-E-: 3 bbE-: 3 B-ee: 1 bbee) x F2 BE Be bE be BE Be bE be AACC AACc AacCC AACc ... ¥Penetrance: Genotype does not necessarily define phenotype. The proportion of individuals with a given genotype express the phenotype determines penetrance.

Covenant. a contract or agreement between two parties. In the Old Testament the Hebrew word berith is always thus translated. Berith is derived from a root which means "to cut," and hence a covenant is a "cutting," with reference to the cutting or dividing of animals into two parts, and the contracting parties passing between them, in making a covenant ( Genesis 15; Jeremiah 34:18 …

heredity, the sum of all biological processes by which particular characteristics are transmitted from parents to their offspring. The concept of heredity encompasses two seemingly paradoxical observations about organisms: the constancy of a species from generation to generation and the variation among individuals within a species. Constancy and variation are actually two sides of …

Define family. family synonyms, family pronunciation, family translation, English dictionary definition of family. n. pl. fam·i·lies 1. ... nuclear family, progeny, kindred, next of kin, kinsmen, ménage, kith and kin, your nearest and dearest, kinsfolk, your own flesh and blood His family are completely behind him, whatever he decides.

The peptide:MHC class II complex can be recognized by antigen-specific armed helper T cells, stimulating them to make proteins that, in turn, cause the B cell to proliferate and its progeny to differentiate into antibody-secreting cells. Some microbial antigens can activate B cells directly in the absence of T-cell help.

MedTerms medical dictionary is the medical terminology for MedicineNet.com. Our doctors define difficult medical language in easy-to-understand explanations of over 19,000 medical terms. MedTerms online medical dictionary provides quick access to hard-to-spell and often misspelled medical definitions through an extensive alphabetical listing.