Explanation:
In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.
In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.
In the remaining cases, the error occurs after fertilization, as the embryo grows.
Answer:
Slow-twitch
Explanation:
Red meat is rich in slow-twitch muscle fibers. The slow-twitch muscle fibers are rich in myoglobin and blood capillaries. They also have many large mitochondria to generate ATP by aerobic respiration.
These fibers are slow-twitch fibers as the ATPase in myosin head carries out the hydrolysis of ATP at a slower rate causing a slower contraction cycle.
Slow-twitch fibers appear red due to a large amount of myoglobin and a rich network of blood vessels. They are capable of prolonged contractions and are fatigue resistant.
Explanation:
The giant-impact hypothesis is currently the favored scientific hypothesis for the formation of the Moon. Supporting evidence includes: Earth's spin and the Moon's orbit have similar orientations. Moon samples indicate that the Moon's surface was once molten.
The correct notation would be Del(6)(p24). The word 'del' means deletion.
<h3>What is chromosome notation?</h3>
Chromosome notation refers to alphanumeric notations used to identify certain chromosome arrangements.
In this case, chromosome notation denotes a deletion (del) in the short arm (p arm) of chromosome 6.
The stained band of the chromosomes in the karyotype is denoted by the number 24.
Learn more about karyotypes here:
brainly.com/question/1327739
