Your molecular clock model resembles another branching chart, the phylogenetic chart, which you’ve used in this unit. Review the sample phylogenetic chart. What types of data are used to build a phylogenetic chart? How do phylogenetic charts differ from molecular models, such as the molecular clock model?

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?