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Pappalysin-1, also known as pregnancy-associated plasma protein A, and insulin-like growth factor binding protein-4 protease is a protein encoded by the PAPPA gene in humans. [1] PAPPA is a secreted protease whose main substrate is insulin-like growth factor binding proteins. Pappalysin-1 is also used in screening tests for Down syndrome. [2] [3]
Mama and papa use speech sounds that are among the easiest to produce: bilabial consonants like /m/, /p/, and /b/, and the open vowel /a/.They are, therefore, often among the first word-like sounds made by babbling babies (babble words), and parents tend to associate the first sound babies make with themselves and to employ them subsequently as part of their baby-talk lexicon.
Besides the paternal bonds of a father to his children, the father may have a parental, legal, and social relationship with the child that carries with it certain rights and obligations. A biological father is the male genetic contributor to the creation of the infant, through sexual intercourse or sperm donation. A biological father may have ...
Ralph Edgar "Papa" Thorson Jr. (July 11, 1926 – November 17, 1991) was an American bounty hunter. In 1976, he was the subject of a biography by Christopher Keane. [ 1 ] In that biography, Sue Lyon states, "He's the only man I know who can do a bastard's job with taste and come off looking like a nice guy."
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Some of the earliest examples of parent-offspring conflict were seen in bird broods and especially in raptor species. While parent birds often lay two eggs and attempt to raise two or more young, the strongest fledgling takes a greater share of the food brought by parents and will often kill the weaker sibling ().
The black walnut secretes a chemical from its roots that harms neighboring plants, an example of competitive antagonism.. In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other.
Papa and Rangi held each other in a tight embrace. In Māori mythology the primal couple Rangi and Papa (or Ranginui and Papatūānuku) appear in a creation myth explaining the origin of the world and the Māori people [1] (though there are many different versions).