Gregor Mendel was a monk who did experiments for seven years on 28000 pea plants in the garden of a monastery. He found that the pea plants have some traits which come in pairs. Select from the following the one which was not found by Mendel

Gregor Mendel was a monk who did experiments for seven years on 28000 pea plants in the garden of a monastery. He found that the pea plants have some traits which come in pairs. Select from the following the one which was not found by Mendel Correct Answer next generation plants have seeds with a mixed new colour made from both green and yellow

Concept:

About Gregor Mendel:

• Gregor Mendel, a 19th-century Augustinian monk.
• He was born in a poor farmer’s family in Austria in 1822.
• He is called the father of modern genetics.
• He found that the pea plant has some traits which come in pairs (called an allele).
• Mendel's pea plant experiments conducted between 1856 and 1863 established many of the fundamental laws of heredity.
• It is now referred to as the laws of Mendelian inheritance.

Explanation-

• Gregor Mendel conducted hybridization experiments on garden peas for seven years (1856-1863).
• A dihybrid cross describes a mating experiment between two organisms that are identically hybrid for two traits.
• A hybrid organism is one that is heterozygous, which means that carries two different alleles at a particular genetic position.
• Therefore, a dihybrid organism is one that is heterozygous at two different genetic loci.
• Gregor Mendel performed dihybrid crosses on pea plants and discovered a fundamental law of genetics called the Law of Independent Assortment.

Key Points

• Mendel selected traits for dihybrid cross for his experiments-
  • Colour of cotyledons- Yellow (Y) and Green (y).
  • Seed shape - Round (R) and Wrinkled (r).

He took pea plants with different characteristics- a tall plant and a short plant, produced progeny from them and calculated the percentages of tall or short progeny.

Important Points

• Seeds which are either green or yellow - Correct
• Seeds which are either rough or smooth - Correct
• plants are either tall or short - Correct
• next generations have seeds with a mixed new colour made from both green and yellow - Incorrect