N the brain<span>, dopamine functions as a </span>neurotransmitter<span>—a chemical released by </span>neurons<span> (nerve cells) to send signals to other nerve cells. The brain includes several distinct </span>dopamine pathways<span>, one of which plays a major role in </span>reward-motivated behavior<span>. Most types of rewards increase the level of dopamine in the brain, and many </span>addictive<span> drugs increase dopamine neuronal activity. Other brain dopamine pathways are involved in </span>motor control<span> and in controlling the release of various hormones. These pathways and </span>cell groups<span> form a dopamine system which is </span>neuromodulatory<span>.</span>
C) has partial positive and negative charges at each end
The big fish population will increase because they would have a lot of small fish to eat
Answer:
Therefore, 98% of the US population have no alleles for PKU
Explanation:
The Hardy-Weinberg equilibrium states that the amount of genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
The Hardy-Weinberg equilibrium is expressed quantitatively using a mathematical equation known as the Hardy-Weinberg equation. the equation is given below:
p² + 2pq + q² = 1
also, p + q = 1
Given a pair of alleles, S and s with A dominant and a recessive
where p is the frequency of the dominant allele in the population,
q is the frequency of the recessive allele in the population,
p² represents the frequency of the (SS) dominant genotype,
q² represents the frequency of the (ss) recessive genotype,
2pq represents the frequency of the heterozygous genotype
From the given question,
q² = 1/10000 = 0.0001
q = 0.01
from p + q = 1
p = 1 - 0.01 = 0.99
p² = 0.98
Therefore, 98% of the US population have no alleles for PKU
