Gene therapy has been used to treat and cure cystic fibrosis. Cystic fibrosis is caused by a in a single gene?

Write a paragraph explaining why the effect of mutations can vary widely - from neutral to harmful to beneficial

Which best summarizes the finding of avery? a. some traits are recessive. b. humans reproduce sexually. c. dna is a transforming factor. d. traits cannot be inherited.

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity