In the shepherd’s-purse plant (Capsella bursa-pastoris), see…

In the shepherd’s-purse plant (Capsella bursa-pastoris), seed shape is controlled by two genes, A and B. When both the A and B loci are homozygous recessive (aabb), the seeds are ovoid. However, if the dominant allele for either or both of these genes is present, the seeds are triangular. Based on this information, what are the expected phenotypic ratios for a cross between plants that are heterozygous for both traits?

Lori thought she heard a gunshot while she was out walking b…

Lori thought she heard a gunshot while she was out walking but discovered it was only a car down the street backfiring. As she continued on her walk her heart stopped racing and her blood pressure returned to normal. Lori’s blood pressure and heart rate returned to normal levels due to activity within her: