What pattern of inheritance occurs in the ABO blood system where there are three distinct alleles in human populations?
What will be an ideal response?
Multiple allelism
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With respect to DNA structure, polarity means that
A) DNA nucleotides can be either positively or negatively charged. B) the phosphate backbone of DNA is negatively charged. C) DNA nucleotides can be charged or uncharged. D) DNA strands have a 5? direction and a 3? direction.
Which of the following is the correct organizational hierarchy, from largest to smallest, in the hierarchical order of life? (Some levels have been omitted, so you are looking for the correct order.)
A) Community ? Ecosystem ? Population ? Tissue ? Organ ? Cell ? Organelle ? Atom B) Ecosystem ? Community ? Population ? Organ ? Tissue ? Cell ? Molecule ? Atom C) Biosphere ? Community ? Population ? Tissue ? Organ ? Cell ? Atom ? Molecule D) Ecosystem ? Population ? Community ? Organ system ? Organ ? Cell ? Molecule ? Atom
In all of the following characteristics, prokaryotes differ from eukaryotes except in
A. multicellularity. B. organelles. C. cell size. D. chromosomes. E. nucleic acids as the hereditary material.
The specific relationship between a legume and its mutualistic Rhizobium strain probably depends on _____
A) each legume having a chemical dialogue with a fungus B) each Rhizobium strain having a form of nitrogenase that works only in the appropriate legume host C) each legume being found where the soil has only the Rhizobium specific to that legume D) specific recognition between the chemical signals and signal receptors of the Rhizobium strain and legume species