Answer:
A. the heterozygote advantage
Explanation:
Heterozygote advantage is the condition where the heterozygous individual has higher relative fitness than both homozygous dominant and homozygous recessive individual. This means that the heterozygote individual has higher chances of surviving than both the homozygous counterparts. Sickle cell anemia is a recessive inherited disorder in which oxygen carrying hemoglobin has an abnormal structure. Hence, the resultant RBCs are not spherical but have crescent sickle shape. The oxygen carrying capacity of such RBCs is drastically reduced but they are unaffected by malarial parasite due to their abnormal structure.
- A person with both the recessive genes for sickle cell would not be able to survive due to insufficient oxygen transport in body.
- A person with both the dominant genes would be free of sickle cell anemia but in case of malaria would not be able to survive as the normal RBCs would be hijacked by the parasite.
- A hetrerozygote would survive both in malaria and sickle cell condition since he has enough normal RBCs for oxygen transport but also has sickle cell RBCs which are unaffected by malarial parasite.
Carbohydrates is the answer
Medulla oblongata does not play a role in visual reflexes.
<h3>What is medulla oblongata?</h3>
Medulla oblongata is the lowest part of the brain and brainstem . The medulla oblongata is linked up to the midbrain by pons.
The medulla oblongata function well in the regulation of autonomic nervous system, such as respiration, cardiac function, vasodilation, and some reflexes actions like vomiting, sneezing coughing and so on.
Therefore, Medulla oblongata does not play a role in visual reflexes.
Learn more about medulla oblongata here.
brainly.com/question/123107
Hi there!
This would be an example of an energy pyramid! In an energy pyramid, the next trophic level gets only 10% of the energy from the level below it. In this example, lets say that there is 100 energy in the eggs. Then, 10% of that goes to the snake, so the snake gets 10. Lastly, the hawk eats the snake, so the hawk gets 1. The answer is 1%, option A.
Hope this helps!! :)
If there is anything else that I can help you with, please let me know!
