A gene that controls an observable trait in birds has three different alleles. Which of the following best describes how gene flow would affect the genetic makeup of this population? A. Allele frequencies would shift until the population has only one allele.

B. Birds would choose to express the allele that provides them with the greatest survival advantage.

C. The allele that provides the greatest survival advantage would increase, while the other two allele frequencies would decrease.

D. The bird population would have new alleles introduced into the gene pool, increasing genetic variation.

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Name the organs of humanelemintary canal.

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems