Answer:
Parasitism is when one species benefits and the other is harmed.
Mutualism is when both species benefit.
Commensalism is when one species benefits and the other species is neither harmed nor helped.
Answer:
D. A nitrogen base has been added to the DNA molecule.
Explanation:
You can see that the sequence for the nitrogen bases are in the exact same order after the exposure, this rules out A. You can count how many bases there are, 7 before and 8 after so it cannot be B. Lastly, given that they are in the same order as were before and that a base has been added, you can see that no bases were replaced (so not C) and that D is your answer.
Answer:
prophase I
Explanation:
Telophase II: Nuclear membranes reform.
Prophase I: The chromosomes condense
Interphase: Replication of DNA in preparation
Prophase II: There are now 2 cells.
Answer and Explanation:
In suspension cultures (liquid media), it has been demonstrated that single cells can regenerate to form an entire plant, and undergoes all the natural stages of embryo development.
Totipotent stem cells give rise to all types of cells including the placenta and embryo in animals.Pluripotent cells on the other hand are cells that are capable of self-renewing into the three different germ layers of an embryo forming an adult without giving rise to placenta. As the embryo grows, it develops into multipotent cells.
