Answer:
A
Explanation:
Selective breeding takes a person and so does cloning
Because they are so old and over years they fade and wear away. <span />
Answer:
Most people experience increased infant mortalities at high altitudes due to the inability of the mother to provide sufficient oxygen to the developing fetus but now variation in the DNA sequence in the people that lives at higher altitudes like in Tibetans allow normal level of infant survival at high altitudes.
This variation occurred in the EPAS1 gene in the Tibetan population that is responsible for delivering oxygen more efficiently to the fetus. This nucleotide variation is also present in low landers of Beijing but natural selection selected the variant gene in Tibetan people because they require this mutated gene for their survival.
So the population passed this variant gene in next-generation, therefore, inheritance allowed the spreading of the mutated gene to the next generation therefore by natural selection and inheritance a mutated gene spread through a human population that had just begun living high in the mountains.
<span>Some of the more common single-gene disorders include cystic fibrosis, hemochromatosis, Tay-Sachs, and sickle cell anemia.
Even though these diseases are primarily caused by a single gene,
several different mutations can result in the same disease but with
varying degrees of severity and phenotype.</span>
Answer:
a) 1 & 5
Explanation:
For a pendulum bob, it is customary to call the lowest position the reference position or the zero level. So when the bob is at the equilibrium position
