Answer:
Organisms
Explanation:
Organisms that cannot use sunlight directly obtain energy by consuming plant or other organisms that have consumed plants.
These organism are heterotrophs.
- Plants are autotrophs as they produce their own food on their own.
- They are the primary producers in the ecosystem by means of photosynthesis.
- Heterotrophs relies on the food produced by autotrophs.
- They can obtain this by either feeding on plant matter or by feeding on primary consumers that feeds on plants.
Answer:
A
Explanation:
RNA uses uracyl instead of thymine in the sequence so A pairs with U instead of T
Then the mice would not be infected as the DNA is destroyed by the enzyme ....so S type have no use and can't transfer it's DNA ....so mice survive !
Answer:
Median height is selected
Explanation:
Stabilizing selection is a particular type of natural selection where the mean of the trait in the population stabilizes on non-extreme phenotypes, thereby favoring intermediate phenotypic variants. At genetic level, stabilizing selection is shaped by selective forces that push the distribution of the trait in the population toward the average (median trait), it is a condition that may happen when a population is completely adapted to its environment. Thus, stabilizing selection acts to purge the extreme phenotypic variants via purifying selection. Stabilizing selection is considered to be one of the most important mechanisms controlling the distribution of different phenotypes after many cycles of artificial selection, it s for that reason that breeders believe that this type of natural selection is the most common in nature.
If meiosis doesn't take place then the fertilization does not take place !
if one fertilised the egg by any means , then the ploidy of the zygote will increase and there generates a lot of disease !