I need help on this one too
Answer:
Evolution has occurred thanks to many random changes in the DNA base sequence that we call mutations. This is caused by errors in the genetic information contained in the cells - due to chemical or physical factors - and also its subsequent propagation by replication, being transcendent for evolution those that will later be transmitted to the offspring: somatic cells if reproduction it is asexual and the gametes if it is sexual. For this reason, we say that mutations are the primary source of gene variability, essential for evolution to exist. Thus, without mutations, the genetic variability that natural selection needs would not be present - in addition, such diversity is important for the population to more successfully mold (or adapt) to continuous environmental changes.
Explanation:
A mutation is a change in the information contained in the DNA of cells. The DNA of an organism influences all aspects of its life. Therefore, a change in the DNA of an organism can produce changes in all aspects of its life. The mutation increases the genetic variability of the species and contributes to the adaptation of the species to the environment and to their evolution. Viability and fertility are associated with adaptation, the total capacity of an organism to survive and reproduce. The effect of a mutation in any generation is minimal, but over time a considerable amount of variation from mutations can accumulate. Most mutations are harmful and their carriers die, but those that produce an improvement remain in the species and are essential in the evolutionary process. When mutations appear in a certain population, the genotype changes from generation to generation, appearing individuals with characteristics different from those of their predecessors. This is how the population evolves, being able to originate new species. Mutations that are detrimental to the carrier individual will be eliminated by natural selection.
Answer: D
Explanation:
<u>Lipids are made of carbons bound to hydrogen, oxygen, and nitrogen groups; the unequal sharing of electrons around the oxygen (carboxyl) and nitrogen (amino) groups cause the molecule to fold up on itself and form different shapes that affect the function of the molecule in the living organism. </u>
D) They are the snallest particles of any material.
The answer to the question is letter A. perihelion.
>The perihelion<span> is the point in the </span>orbit<span> of a </span>planet<span>,or a body</span><span> where it is nearest to its point of orbit, generally a star. It's the opposite of </span>aphelion<span>-- the point in the orbit where the celestial body is farthest from its point of orbit.
>></span>The perihelion and aphelion are the nearest and farthest points <span>of a body's direct </span>orbit<span> around the </span>Sun<span>.</span>
