Mendelian Inheritance - GCSE Biology Definition

Reviewed by: Lára Marie McIvor

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Mendelian inheritance is a way of understanding how characteristics are passed from parents to offspring, based on the work of Gregor Mendel in the 1800s. Mendel experimented with pea plants and observed that traits such as flower colour and seed shape were inherited in predictable patterns. He proposed that inheritance is controlled by "units", one from each parent. These “units” are now known as genes, and different versions of them are called alleles. Mendel showed that some traits are dominant and others recessive. Mendelian inheritance helps us predict the chances of inheriting certain traits and is an important part of understanding genetics.

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Lára Marie McIvor

Reviewer: Lára Marie McIvor

Expertise: Biology, Psychology & Sociology Subject Lead

Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.

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