Isomers are molecules with the same chemical formula but different structures. Structural isomers differ in arrangement, geometric isomers have different spatial arrangements, and stereoisomers have the same connectivity but differ in spatial arrangement.
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DDT (dichlorodiphenyltrichloroethane) is a synthetic pesticide once widely used to control insect-borne diseases like malaria. Its environmental persistence and harmful effects led to bans in many countries.
Examples of asexually reproducing species include bacteria (binary fission), plants (runners, bulbs), and some animals (parthenogenesis). Offspring inherit genetic material from a single parent, lacking genetic variation.
Asexual reproduction involves the creation of offspring without the union of gametes. It results in genetically identical or nearly identical offspring to the parent, common in plants, bacteria, and fungi.
Chromosomes are thread-like structures in cells containing DNA. They carry genetic information, determining an organism’s traits. Humans have 23 pairs, with one set inherited from each parent.