25 ! this pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. based on the information in the chart, which of the following statements is true about individuals 3 and 4? select one: a. at least one is heterozygous for the trait. b. they are both homozygous dominant for the trait. c. they are both heterozygous for the trait. d. at least one is homozygous for the trait.

The answer is A. I took this quiz and got it right. Hope this helps.

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.