People who suffer from attention-deficit/hyperactivity disorder (ADHD) tend to have unusually low levels of dopamine.
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ADHD is a brain disorder characterized by problems in paying attention and excessive activity and it is suggested that lower levels of dopamine (elevated number of dopamine transporters) are associated with symptoms of ADHD. ADHD is associated with functional impairments of dopamine pathways and also norepinephrine pathways because these pathways are responsible for modulating <span>executive function<span> (cognitive control of behaviour).</span></span></span>
The options are incomplete and have been listed incorrectly. Complete question has been attached.
Answer:
C) Dd and Dd
Explanation:
It is given that deafness is a recessive trait which means that Dr. Smith has genotype dd since a recessive trait can only be expressed when both the alleles in genotype are recessive. However, his parents are normal. So his parents can have DD or Dd genotype. Dr. Smith has obtained one recessive d allele from his father and other recessive d allele from his mother. Thus, the parents should have Dd genotype and the correct option is c.
The correct answer would be “They touch the coral or take pieces of it”
What is the Nucleolus?
Answer:
-The nucleolus is a round body, it makes ribosomal subunits from proteins and ribosomal RNA, a.k.a rRNA.
Where is it found?
Answer:
- It is located inside the nucleus of a eukaryotic cell.