If both a mother and a father carry a dominant gene for dark eyes and a recessive gene for light eyes (bb), what is the likelihood that their offspring will have dark eyes?
a) 1 in 4
b) 2 in 3
c) 3 in 4
d) 4 in 4

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.