Yellow genes are recessive to green; green are dominant to both red and yellow. Which color of genes disappeared faster when the environment was hostile to them? Why?
Dominant genes in the genotype only need one gene to show up in the phenotype.
To determine which color of genes disappeared faster in a hostile environment, we need to consider the principles of genetic inheritance and natural selection.
In this scenario, yellow genes are recessive to green genes, which means that for an individual to express the yellow trait, it needs to inherit the yellow gene from both parents. On the other hand, green genes are dominant to both red and yellow genes, meaning that if an individual possesses at least one copy of the green gene, it will express the green trait.
In a hostile environment, certain traits may provide a survival advantage, allowing individuals with those traits to have a better chance of surviving and reproducing. This process is known as natural selection. In this case, if the hostile environment favors the green trait over the yellow and red traits, individuals with the yellow and red genes would be at a disadvantage.
Since yellow genes are recessive, individuals can carry the yellow gene without expressing the yellow trait. This implies that individuals with at least one copy of the green gene will have a higher chance of survival in a hostile environment compared to those without it. Therefore, the yellow gene would disappear faster compared to the red gene, as red genes can still persist in individuals carrying the green gene.
To determine the rate at which the yellow gene disappeared, we would need specific data on the frequency of different gene combinations in a population over time. By comparing the number of individuals with yellow genes at the beginning and end of a particular period in a hostile environment, we would be able to assess the speed at which the yellow gene disappeared.