Answer:
winter
Explanation:
On this image, we can see the Earth being tilted away by 23.5 degrees from the Sun. This tilting puts the Northern Hemisphere in a situation where it is the one that is tilted away from the Sun, thus it will receive less sunlight, as well as less direct sunlight. That will cause lower temperatures on the Northern Hemisphere, thus the winter season will start, and it will last for around three months, at least at the mid-latitude zones. On the other side, the Southern Hemisphere is more exposed to the Sun during this tilting, so t receives more sunlight, and more direct sunlight, resulting in summer in this half of the planet.
Answer:
D. Stabilizing selection
Explanation:
Stabilizing selection helps to prevent extreme trait characteristics and focuses on the non extreme ones to ensure that such traits are prevalent.
Due to the fact that there isn’t enough food for a large number of the offspring and also the risk of losing all the eggs to those who had a small amount of eggs, stability was achieved after some generations that ensures that there was a balance in ensuring the eggs weren’t too few and too many.
Answer:
Viruses today are not considered living things, since a comparison of archaeobacteria and living things in general cannot have autonomous reproduction methods, if they need to be replicated in a DNA or RNA replication medium foreign to them.
This means that their DNA or RNA cannot replicate by itself, that is why they need to be detected in cells or bacteria (forming bacteriophages) in order to assemble in the DNA of these living beings and replicate in a "hidden" way.
Explanation:
There are cells that recognize the invasion of certain viruses so they self-destruct and do not allow replication of it in the replication of their own DNA, RNA, but there are others that do not, that is why there are viral diseases such as HIV.
On the other hand, in the case of bacteria, they form bacteriophages or form mutations in the DNA, RNA of these living prokaryotic organisms, resulting in more pathogenic or potentially dangerous microorganisms.
Well, it depends on the purple pea plant. Purple pea plants can have either PP or Pp.
White pea plants always have recessive, so it would have pp only.
So, the expected outcome of the cross would be -
PP x pp or Pp x pp
PP x pp = all the offspring would be purple in colour
or
Pp x pp = half would be purple and the other half would be white
Answer:
C
Explanation:
A cell can communicate with nearby cells (paracrine signaling) and with cells far away from them (endocrine signaling). These signalings are dependent on the cell membrane receptors on the cell and their response to ligands that bind to them. An example of close cell communication is that of neurotransmitters in neural synapses. An example of cells communicating with faraway cells is that of the pancreas that produces insulin into the blood. The insulin induces other cells across the body to take up glucose.
