Answer:
Genetic drift
Explanation:
Based on the information given here, the observed genetic variation is most likely an example of Genetic drift .
Genetic drift is the variation in the relative frequency of different genotypes in a small population, owing to the change disappearance of particular group of genes as individuals die out do not reproduce.
The above mentioned information indicate a typical example of Genetic drift
<h3><u>Answer;</u></h3>
a nebular cloud of dust and gas
All of the celestial bodies of the solar system were said to have formed <u>from a nebular cloud of dust and gas.</u>
<h3><u>Explanation</u>;</h3>
- The solar system is composed of the sun and all the planets and other bodies that travel around it. A planet is a celestial body that orbits the sun.
- <em><u>According to solar nebula theory, a solar nebula is where the sun and planets were formed from. Solar nebula is a rotating cloud of gas and dust.</u></em>
- The sun is composed of about 99 percent of all the matter that was contained in the solar nebula. During formation of the solar system, the sun was forming in the center of the solar nebula, while planets were forming in the outer regions.
Intercostal Muscles
The muscles of respiration
are muscles that contribute to exhalation and inhalation by causing the contraction
and expansion of the thoracic cavity. However, diaphragm is the main muscle of breathing
while intercostal muscles is one of the most important muscles for respiration.
Intercostal muscles function by manipulating the width of the rib cage and they
are attached between the ribs.