Properly identifying each species.
Accurately recording his findings.
Not interfering with ecosystem while studying the birds.
The Hardy – Weinberg principle
has seven conditions that should occur in the evolution of the population. One
is when mutation does not happen. Two, is when natural selection is not
occurring. Three, if the population is infinitely large. Four, if all the
members of the population produce offspring.
Five, sexual intercourse is random. Six, the population will produce the
same number of offspring. And lastly, the population does not migrate from one
place into the other. The thing that would disrupt the genetic equilibrium is
the mutation.
Approximately twenty-five elements occur naturally on earth. Remaining elements either have to be synthesized or obtained through chemical reactions.
Answer:
Unipotent stem cells are capable of differentiating into only one mature, terminally differentiated cell type. Spermatagonial stem cells are unipotent and only capable of developing into sperm cells.
Answer:
the correct answer is D
Explanation:
In the germinal stage it is said that it lasts between 10 days and two weeks. During this stage, the fertilized egg divides and advances through the fallopian tube until it implants in the wall of the uterus.
If it cannot be implanted in the wall of the uterus, then it is considered a miscarriage due to the pregnancy, it cannot be carried out and it is very rarely perceived by the woman that the presence of the fertilized cell is imperceptible in bleeding.
