. 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>
To find the density of an object, divide the mass by the volume. To find the density of the object in your problem, use a calculator to divide 60.0 by 400.0
Answer:
Chloroplasts are not visible in the onion bulb, only in its leaves and stem.
Explanation:
Chloroplast is an organelle found in the cells of green plants, and in photosynthetic algae, where photosynthesis takes place.
Note that onion bulb do lack chloroplasts because the bulb is usually situated under the ground where light cannot penetrate; so it does not need chloroplasts.
However, the green leaves and stem of an onion plant (the shoot system situated above the ground) are normally exposed to daylight and so have chloroplasts for the production of sugars stored in the bulb, but the onion bulb does not.
In spite of all that has been mentioned, onion contains plant cells not animal cells.
Which statement is true for some photosynthesizing animals?
A.Some carry out photosynthesis through the chloroplasts they incorporate into their cells.
B.They conduct light-dependent reactions and the Calvin cycle in the mitochondria.
(C.They’re true autotrophs because they can photosynthesize on their own.)
D.They’re single-celled organisms that move like animals, but they contain chloroplasts.
-90.15......................... (dots for the 20 words thing)
