7.Diane has type A blood and Darryl has type B. They have a son Duane with type A blood and a daughter, Dora, with type B blood. If they have another child, what are the chances that it

A - 1/4

B - 1/2

C- 1/8

Explanation:

The complete question is

Diane has type A blood and Darryl has type B.  They have a son Duane with type A blood and a daughter, Dora, with type B blood.  If they have another child, what are the chances that it  

         A. Will have type AB blood?  

         B. Will be a girl?  

         C. Will be a boy with type O blood?

A.

Let the genotype of Diane be  AO

Daryl can have genotype BO

AO  * BO

AB, AO, BO, OO

Probability of having AB blood group is 1/4

B.

1/2

C

1/2 * 1/4 = 1/8

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.