Gregor Mendel, a monk and teacher from Central Europe, chose common garden peas, or Pisum sativum, for his experiments in genetics because peas are easily grown in numbers large enough to be useful for his experiments and their reproduction can be altered. Pollen could be transferred from one pea flower to another with a paintbrush.Know More
Mendel set out to investigate the patterns of inherited traits from parent to offspring during a period of eight years in the mid-1800s, publishing his work in 1866. His work involved selective cross-breeding of the pea plants across several generations with a view to observing inherited traits.
At the time, it was believed that the traits of both parents blended in their offspring. What Mendel found during his research, however, contradicted that theory. He found that certain traits appear in only two versions, with no intermediate or blended version. The pea flowers, for example, were either white or purple, and the seeds either yellow or green.
Mendel's work results in important discoveries that make up the foundation of genetics as it it understood in modern science.
The two types of nucleic acids are deoxyribonucleic acid, or DNA, and ribonucleic acid, or RNA. DNA can be found in most living organisms and is found in the nucleus of living cells. RNA converts genetic information found in genes into amino acid sequences.Full Answer >
DNA replicates to make copies of itself. This is an indispensable process that allows cells to divide for a living organism to grow or reproduce. Each new cell needs a DNA copy, which serves as instructions on how to function as a cell.Full Answer >
Gregor Mendel learned through studies with pea plants that factors, now known as genes, are what determine biological inheritance. When he bred the plants, he noticed that the flower's color was never a blend of the parent plants' colors but rather a solid shade.Full Answer >
When two genes segregate independently, it is called independent assortment. Gregor Mendel, a European monk who studied heredity, identified this process in 1865 while he was investigating multiple generations of pea plants.Full Answer >