Answer:
Mutations in introns create alternative splicing site which in turn make mRNA with reduced or no translation.
Explanation:
Introns regulate the splicing of heterogenous RNA during post transcriptional modifications as well as affect the stability of mature mRNA. The stable mRNA is more likely to be translated into proteins. So, introns also regulate the translation of mRNA.
In human beta thalassemia, mutations in intron create alternative splicing sites which in turn affect the formation of beta globin chain of hemoglobin. Lack of beta globin chain reduces the amount of functional hemoglobin and causes anemia.
We would not have photosynthisis
Answer:
The parasite would affect the brain of the lynx and the brain of the hare
Explanation:
Toxoplasma gondii is a parasite that is able to infect pretty much every warm blooded animal on the planet. It is an obligate intracellular parasitic one-celled eukaryote. This parasite manages to cause the infectious disease known as toxoplasmosis which damages the brain. The hare is a warm blooded animal, and it can be infected by this parasite. If the hare is infected and a Canadian lynx kills that particular hare and consumes it, then the lynx will also be infected with the parasite. The parasite will cause damage to the lynx's brain which will result in the dying of that lynx.
Answer:
Some individuals have genes that increase their chances for survival and reproduction. These individuals are more likely to reproduce and pass on their genes, causing their genes to become more common in the next generation.
Explanation:
The basic idea of natural selection is that environmental conditions determine how well the characteristics of organisms contribute to the survival and reproduction of the organism; organisms that do not have these traits may die before reproduction or be less fertile. As long as environmental conditions remain the same or close enough for these traits to remain adaptive, these traits will become more common in populations. The loss of an ecological niche of a species or overcrowding as a result of an increase in abundance can significantly alter the adaptive characteristics required for survival. In this case, and also in any environment where survival is determined more by ecology than secondary sex characteristics, ecological choice takes place.
