Because the babies are born in an environment where they can prosper and have instincts to help them.
Answer:
HI, So People need more explination, What was the experiment about? That way we can give a proper answer...
Explanation:
Answer:
The dwindling zebra population has led to the decline of the predator lion and cheetah populations.
Explanation:
The decrease in zebra population also decreases the population of the predator lion and cheetah because both predators depends on zebra for their survival. Both predators used zebra as a source of food for their growth and survival so if there is high availability of zebra so the population of Lions and cheetah also increases while on the other hand, if there is decrease in zebra population, the population of lion and cheetah also decreases because of less available food for them.
Blood Type A and Blood Type B are co-dominant traits. They do not dominate each other, rather they combine to form blood group AB. This is only possible if both the blood groups are pure.
Answer:
Nitrogen 15, N15 isotope,
Explanation:
Generally Nitrogen has two isotopes N14 and N15. The N14 has 7 protons and 7 neutrons with the atomic mass of 28( n+p). However the N15 has 7 protons and 8 neutrons.Since Neutrons are heavier than protons and constituted greater percentage of the atomic mass of an element the N15 isotope is heavier than the N14 isotope.
Therefore, Ammonium chloride solution containing the labeled heavier N15 was initially added to the bacterial growing medium; so that the bacterial can use it to make their DNA, and divided manytimes so that N15 isotopes is fully incorporated Therefore the DNA strands which incorporated this will be heavier,(old) and easier to segregate to the lower band during centrifugation , for identification compare to the newer lighter ones.
<u>Thus the parent( </u><u>heavy/old</u><u>) containing DNA N15 and( New/light) in the daughter DNA N14 strands can easily be separated for identification during semi- conservative replication.</u>