Julia is trying to place a duckbilled platypus, lizard, bear, and monkey on a phylogenetic tree. she learns that the duckbilled playpus, bear, and monkey are classified as mammals. she also learns that mammals share a common ancestor with reptiles. which additional piece of information will be most to julia to properly build her phylogenetic tree?
a. the platypus has fur like other mammals
b. the platypus lays eggs like a reptile.
c. the platypus does not have fins like a fish.

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Can a trait be both polygenic and have multiple alleles? explain why or why not.