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1 day ago · Sexual dimorphism is the condition where sexes of the same species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction.
3 days ago · Definition. Substitution, as related to genomics, is a type of mutation in which one nucleotide is replaced by a different nucleotide. The term can also refer to the replacement of one amino acid in a protein with a different amino acid.
4 days ago · Two major types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Deoxyribonucleic Acid (biology/genetics definition): A helical double-stranded nucleic acid that is crucial for containing the genetic information for cell growth, division, and function . Abbreviation: DNA. Variant: desoxyribonucleic acid.
5 days ago · Definition. Structural biology is the study of the molecular structure and dynamics of biological macromolecules, particularly proteins and nucleic acids, and how alterations in their structures ...
4 days ago · Definition. A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection. Germline mutations (that occur in eggs and sperm) can be passed on to offspring, while somatic mutations (that occur in body cells) are not passed on.
1 day ago · Glossary of cellular and molecular biology (0–L) This glossary of cellular and molecular biology is a list of definitions of terms and concepts commonly used in the study of cell biology, molecular biology, and related disciplines, including genetics, biochemistry, and microbiology. [1] It is split across two articles:
4 days ago · valve, in anatomy, any of various membranous structures, especially in the heart, veins, and lymph ducts, that function to close temporarily a passage or orifice, permitting movement of a fluid in one direction only. A valve may consist of a sphincter muscle or two or three membranous flaps or folds. In the heart there are two valves that ...
