Answer:
d. different traits
Explanation:
Human cell are diploid (with the exception of gametes) which means that they have two sets of chromosomes: one inherited from mother and another inherited from father (23 chromosomes in each set, total of 46 chromosomes per cell). Those chromosomes in pair are called homologous chromosomes, they are the same in size and shape, contain the same genes but code for different traits.
The amount of population change due to immigration or emigration
IAIA IAiO IBIB IBiO IAIB iOiO
These are the blood types: A, A, B, B, AB, and O, respectively.
Since both A and B are dominant to O, which is recessive, they share the trait when both expressed (type AB).
This is called [B. Codominance.]
The food chain in a visual representation of how energy is flowed through out a specific environment. While it is very similar to the food web, the main difference is that the web gives a more broad wide range of organisms and it is more specific with what eats what. The second part of your question about a few animals roles umm... Grass is a producer which has the role of feeding primary consumers, it is the base of the chain or web without it the whole thing would collapse. Tertiary consumers such as owls have the role of eating secondary consumers. I always thought of it like the tertiary consumers are population control since nothing eats them they have no responsibility to feed other organisms just make sure that secondary consumers don't overpopulate.