There are 3 types of mutations, base substitutions - single base mutations are called point mutations. Point mutations are the most common type of mutation and there are two other types. point mutations occur in DNA sequence seconding proteins are either silent, missense or nonsense. Deletions is the second type of mutation, this results when one or more base pairs are lost from the DNA. If one or two based are deleted the translation frame is altered resulting in a garbled message and nonfunctional product. A deletion of three or more bases leave the reading frame intact. A deletion of one or more corona result in a protein missing or more amino acids. this may be deletions or not. And lastly insertions this is when you have additional base pairs which may lead to frameshifts depending on whether or not multiples or three base pairs are inserted. combinations of insertions and deletions leading to a variety of outcomes are also possible.
Un cambio en la secuencia de bases en el ADN o ARN se conoce como mutación . ¿La palabra mutación te hace pensar en ciencia ficción y monstruos con ojos de insecto? Piensa de nuevo. Todos tienen mutaciones. De hecho, la mayoría de las personas tienen decenas o hasta cientos de mutaciones en su ADN. Las mutaciones son esenciales para que ocurra la evolución. Son la fuente principal de todo el material genético nuevo -nuevos alelos - en una especie. Aunque la mayoría de las mutaciones no tienen efectos en los organismos en que ocurren, algunas mutaciones son beneficiosas. Incluso las mutaciones dañinas rara vez causan cambios drásticos en los organismos.
Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.
Answer: D. the mucus that helps the sperm travel to the uterus is too thick.
Artificial insemination is the technique in which the sperms are introduced into the female's cervix or uterine cavity. This results in pregnancy through in vivo fertilization. Women cervix is blocked by thick mucus which block the entry of sperms. Therefore, artificial insemination would be better in such situation than other forms of treatment.
