They affuse because the air comes out the cells
Complete question:
Categorize the following situation as either a pre- or postzygotic isolating mechanism and then specify which type of pre- or postzygotic isolating mechanism it is.
A short hike through the Sandia Mountains from early spring to late summer will often reveal several different species of penstemon. The Rocky Mountain Penstemon blooms in the spring while the very similar inflated penstemon blooms in late summer. As a result, hybrids are rarely encountered.
Answer:
- pre-zygotic isolating mechanism
- Type: seasonal or temporal
Explanation:
There are different mechanisms of reproductive isolation. These are barriers that inhibit or interrupt the genetic flux between different species. These mechanisms are about the biological characters of each species that prevent the reproduction with other species.
The reproductive isolation mechanisms might be either prezygotic or postzygotic.
-
Pre-copulatory or pre-zygotic:
- Ecological or due to habitat isolation;
- seasonal or temporal;
- Sexual or ethologic;
- Mechanical;
- Gamete incompatibility.
2. Post-copulatory o post-zygotic:
- Hybrid inviability
- Hybrid sterility
- Hybrid with diminished viability and or fertility
- Cytoplasmatic interactions.
The exposed situation is an example of prezygotic isolation due to seasonal or temporal barriers. Penstemon blooms in the spring, while the very similar inflated penstemon blooms in late summer. <em>Probably, if they had the same reproductive season, they would produce hybrids</em>. But as they are isolated by different reproductive seasons, they do not. <em>As they can not even fertilize, they are considered to be prezygotic isolated species. </em>
Answer:
Bacteria and Archaea differ in their lipid memebrane, their metabolic pathways and their mode of reproductions.
Explanation:
- Lipid memebrane of Archaea have ether bonds with the branching of aliphatic acids whereas Bacteria' s lipid membrane is composed of ester bonds with fatty acids.
- Archaea exactly don't follow glycolysis or Kreb cycle but uses the similar pathway but bacteria follow these pathways to produce energy.
- Archaea reproduce asexually by binary fission, fragmentation and by budding process. Bacteria produce spores which allow them to live in
Answer:
Osmosis and also a bit of simple diffusion
Explanation:
Since inside the onion has water content also, since outside is more concentrated, the water content inside of the onion will move out into the outside to make the outside less concentrated. So as water leaves the onion, the onion mass reduces
Answer:
2 protons (from atomic number)
2 electrons (also from atomic number-they are the same since it is neutral and not an ion:
2 neutrons because the atomic mass (four) minus the atomic number (two) is two
