#Question id: 13186
#Unit 10. Ecological Principles
The following figure is a model of seedling establishment as a function of distance from a parent tree. Initial seed density measures the number of seeds falling to the ground. Seed survivorship measures the proportion of seeds that survive to the adult stage at each distance
This model predicts that recruitment of new individuals into the population should be
#Question id: 12280
#Unit 10. Ecological Principles
#Question id: 4943
#Unit 11. Evolution and Behavior
In what way were conditions on the early Earth of more than 3 billion years ago different from those on todayʹs Earth?
#Question id: 3382
#Unit 11. Evolution and Behavior
Researchers in the Netherlands studied the effects of parental care giving in European kestrels over 5 years. The researchers transferred chicks among nests to produce reduced broods (three or four chicks), normal broods (five or six), and enlarged broods (seven or eight). They then measured the percentage of male and female parent birds that survived the following winter. (Both males and females provide care for chicks.) Which of the following is a conclusion that can be drawn from this graph?
#Question id: 5221
#Unit 11. Evolution and Behavior
Unequal crossing over during Prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?