The first signs of Huntington’s disease often appear when a person is in his or her 30s and 40s, but it can appear later in life. The earliest symptoms are often subtle, such as mood changes. Do you think the subtle presence of symptoms plays a role in this harmful gene persisting in our population? Why or why not?

Yes, these symptoms might be useful for the identification of aberrant expression patterns of the gene involved in Huntington disease  

Explanation:

Huntington is a genetic dominant disorder associated with the mutation in the huntingtin (HTT) gene. The HTT gene encodes for a protein whose mutant form might be toxic when expressed at high levels

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )

the answer is d p: cell, q: organ, r: organ system, s: tissue