Crossing over: crossing over can mean any number of things. It could mean transforming, like making a change, or something as silly as crossing a bridge. In biological terms, it means transforming onto another stage, like a caterpillar making a chrysalis so it can cross over ino the final stage of its life: a beautiflul butterfly.
Answer:
Can you plz explain what you mean by that . Maybe I can help if you give explanation.
Strong collagenous fibers, known as Sharpey’s fibers, connect the periosteum to the bone surface. This fiber extends to the bone’s circumferential (outer part) and interstitial lamellae (inner). It’s specifically made up of a fibrous layer (outside) and a cambium layer (inside).
. The population must be very large.
2. There must be no
migration and population must
be isolated.
3. There must be no mutations.
4. There must be random mating, which means there are no mating preferences.
<u>Since there are no migrations, mutations, the new alleles cannot enter the population and the population will not change over time.</u>
