What process produces new alleles?
A. Crossing-over during meiosis
B. Mutation
C. Independent assortment of chromosomes during Meiosis
D. All of the above
Answer: B. Mutation
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A trait unique to embryonic stem cells that makes them useful for generating knockout animals is that they
A) are totipotent. B) can be grown in culture. C) have been isolated from mice. D) are extremely well characterized at the molecular level.
HCG targets which reproductive structure?
a. corpus luteum b. placenta c. uterus d. ovary e. blastocyst
In which of the following cases is RhoGAM not given to the RH- mother in order to prevent hemolytic disease of the newborn?
A) within 72 hours of delivery B) around the 8th week of pregnancy C) following an episode of vaginal bleeding during pregnancy D) subsequent to miscarriage or abortion E) after amniocentesis or chorionic villus sampling
Many plants are totipotent, which means
A. each cell of the plant has the genetic capability of developing into an entire plant. B. they are capable of providing their own nutrition, requiring no external nutritional sources. C. they are incapable of dividing to produce daughter cells. D. they are metabolically inactive, existing in a state of dormancy.