A gardener crosses a snapdragon plant that has white flowers with a snapdragon plant with red flowers. All the offspring in the F1 generation produce pink flowers. The gardener crosses two of the plants with pink flowers, and the snapdragon plants of the F2 generation have red, white, and pink flowers. Infer reasons for the gardener’s observations.

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !

Adistinctive characteristic of mammals that is not observed in other vertebrates is