An individual has parents who are both carriers of the recessive allele that causes cystic fibrosis. neither parent is affected by the disease. what is the chance that their offspring will have the disease? a. 0% b. 25% c. 50% d. 100%

Which statement correctly compares metaphase i and metaphase ii? in metaphase ii twice as many chromosomes line up along the middle of the cell as in metaphase i. in metaphase i twice as many chromosomes line up along the middle of the cell as in metaphase ii. in metaphase ii twice as many chromosomes are pulled to opposite ends of the cell as in metaphase i. in metaphase i twice as many chromosomes are pulled to opposite ends of the cell as in metaphase ii.