A woman with blood type AB marries a man with blood type A whose mother had blood type 0. what is the genotypic and phenotypic ratio?

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?