A female has a brother who is color blind and a mother who is not. What is the probability that the female is a carrier for the trait?

25%

100%

50%

0%

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

How would the function of synovial joints be changed if they lacked joint cavities and the bones were united instead?