1. which of the following accurately describes the patterns of inheritance in human blood types? a. two alleles code for blood types and four phenotypes are possible. b. three alleles code for blood types and three phenotypes are possible. c. allele i is dominant over alleles ia and ib . d. allele ia and ib are codominant, and allele i is recessive.

Which of the following is not a potential result of deforestation?

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos

Nitrogen-14 and nitrogen-15 are isotopes of the same element. how do these two isotopes differ? a. they have different numbers of nuclei. b. they have different numbers of protons. c. they have different numbers of neutrons. d. they have different numbers of electrons.