Define the term hemizygous and explain how the hemizygous condition relates to sex-linked inheritanceWhat will be an ideal response?
Because males cannot be homozygous or heterozygous for genes on the X chromosome,
males are said to be hemizygous for all genes on the X chromosome. Traits controlled by
genes on the X chromosome are defined as dominant or recessive by their phenotype in
females. Males give an X chromosome to all daughters and a Y chromosome to all sons.
They never give an X chromosome to any of their sons
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Convergent evolution occurs when two species living in
A. the same area become reproductively isolated. B. different areas become reestablished and are able to reproduce. C. the same area are competing for the same resource thus causing one to evolve away from the other. D. different areas evolve similarities through natural selection acting on those characteristics.
Down syndrome (trisomy-21 ) is the only human autosomal trisomy in which the individuals may survive to adulthood
Indicate whether the statement is true or false
Chemosynthesis is
A. a form of photosynthesis. B. a way some autotrophs make organic matter. C. a product of the Krebs cycle. D. present only in animals.
respiration
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