The answer is a:lentil seed pattern is affected by codominance.
Codominance is a form of inheritance in which two different alleles of a gene are both expressed.
In this example, one allele of the gene is responsible for dotted seeds and the other is responsible for spotted seed. If both these traits appear in heterozygous plants, then it is codominance. Let's take for example flowers - after crossing red flower plant with white flower plant, heterozygote offspring would red purple-white flowers, which means it express both traits and it is codominance.
This is not complete dominance because in this case, heterozygote would express a dominant trait (in the example of red and white flowers, heterozygote will be with red flowers). This is not incomplete dominance as well, because in that case, the heterozygote would have some intermediate trait (in the example of red and white flowers, heterozygote will be with pink flowers which is intermediate color between red and white).
Answer:
Myelin sheath increases the speed of electrical impulse along the nerve cells.
Explanation:
Myelin sheath is an insulting layer of proteins and fatty acids that are present around the nerves of brain and spinal cord.
Myelin sheath increases the speed of conduction of nerve impulse from one nerve cell to another cell. Myelin sheath is formed by the concentric wrapping of schwann cells around the axon. This sheath decreases axonal membrane capacitance and increases the conduction of nerve impulse.
Mostly because they are made up of living cells, but in the bigger picture they are not alive.
Answer: the contractile vacuole
Explanation: The contractile vacuole is a star-like structure located toward the cell's posterior. This organelle aids the cell in the removal of excess water. Without it, the euglena would be able to absorb so much water through osmosis that the cell would burst.
Hope that helps
