John and Marianna are expecting their first baby. John has a widow's peak (dominant allele) hairline while Marianna has a straight hairline (recessive allele). If they have a daughter, she will have a
widow's peak, not a hairline that is indeterminate or a mix between a widow's peak and a straight
line. Why is this so?

its due to law of dominant

only dominant character is ecposed in 1st generation

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves