In pea plants, which color is dominant green or yellow?
Since this is not my area of expertise, I searched Google under the key words "color dominance in pea plants" to get these possible sources:
https://www.google.com/search?client=safari&rls=en&q=color+dominance+in+pea+plants&ie=UTF-8&oe=UTF-8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
To determine which color is dominant in pea plants, we need to understand the basic principles of inheritance as described by Gregor Mendel.
Mendel's work on pea plants identified that certain traits are controlled by pairs of genes, where one gene is inherited from each parent. These genes can exist in different forms called alleles, which can be dominant or recessive.
In the case of pea plant color, there are two alleles involved - one for green color (G) and one for yellow color (g). The dominant allele will determine the visible trait, while the recessive allele will only be expressed if both alleles are recessive.
To determine which color is dominant, we can perform a cross between plants with different colors. Let's assume we cross a pure-breeding (homozygous) green plant (GG) with a pure-breeding yellow plant (gg).
In the first generation (F1), all the offspring will have a genotype of Gg. Here, the green allele is dominant over the yellow allele, so the F1 plants will have the dominant green color.
To confirm the result, we can perform a test cross. We cross the F1 plants (Gg) with a pure-breeding recessive yellow plant (gg).
In the second generation (F2), we observe the phenotypic ratio of the offspring. If green is dominant, we would expect a 3:1 ratio of green to yellow plants.
If the observed ratio is indeed 3:1 (or close to it), we can conclude that green is the dominant color in pea plants. However, if the observed ratio is different, it may suggest a more complicated inheritance pattern or the presence of additional modifying genes.
Therefore, through experimental breeding crosses, Mendel determined that the green color is dominant over the yellow color in pea plants.