Mendel's peas. Historical artwork of the peas (Pisum sp.) used by Gregor Mendel (1822-1884) in his experiments into heredity. He cross-bred peas that

---

Mendel's peas. Historical artwork of the peas (Pisum sp.) used by Gregor Mendel (1822-1884) in his experiments into heredity. He cross-bred peas that produced yellow (A) and green (B) peas. This produces a generation in which the peas are yellow (C). This is because the colour of the peas is controlled by an allele in which yellow colour is dominant. An allele is a pair of genes that have different effects on the same characteristic, for instance controlling pea colour. By breeding the C generation peas together, Mendel found that the next generation had a mixture of pea colours (D). The ratio of yellow to green peas was 3:1. His work formed the basis of genetic theory.

---

Size: 2498px × 3880px
Photo credit: © SHEILA TERRY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: allen, artwork, box, boxes, britain, british, drug, drugs, england, english, factory, female, hanburys, historical, history, illustration, industrial, industry, kingdom, london, manufacture, manufacturing, moulding, pharmacy, science, starch, sweet, sweets, technology, uk, united, woman, women