The question is incomplete. Complete question is as followed :
Imagine a human disorder that is inherited as a dominant, X-linked trait. How would the frequency of this disorder vary between males and females?
A. Males would display this disorder with greater frequency than females.
B. Males and females would display this disorder with equal frequency.
C. Females would display this disorder with greater frequency than males.
Answer:
C. Females would display this disorder with greater frequency than males.
Explanation:
Most of the X-linked disorders are recessive. but if it is dominant, a dominant gene is carried on the X chromosome. So it will effect all the females being the dominant and doesnot effect males more than females.
Hence option C. Females would display this disorder with greater frequency than males is the right answer.
Answer:
The radii of the arterioles constrict by humoral control and by nervous control.
Explanation:
The vascular system regulation is performed by the smooth muscle of the arterioles, which constitute the maximum resistance point. The smooth muscle relaxation provokes vasodilation, increasing its diameter. On the contrary, smooth muscle contraction provokes a decrease in the arteriole´s diameter, reducing the blood flow.
This muscle is under the control of the autonomous nervous system and certain hormones.
Substances such as adrenaline, noradrelanine, angiotensine, vasopresin, and endotelines cause vasoconstriction.
Also, there are many vasoconstrictor fibers of the sympathetic nerves that increase resistance and modify blood flow.
Answer:
The common element in RNA interference treatment for aids,hepatitis,and cancer include the silencing of gene expression.
Explanation:
- Through the degradation of targeted mRNA, gene silencing is done which is very popular in the eukaryotic organism and it is a highly conserved process.
- In the treatment of aids,hepatitis,and cancer, gene therapy is needed because they cannot be cured by simple consumption of drugs.
- The treatment is carried by silencing the gene expression of the particular mRNA host by utilization of RNA interference (RNAi).
(A) Mitochondria, I believe.
