The mapping of the human genome in the mid-1980s was integral for identifying new human genetic markers because of the identification of what types of polymorphic DNA markers?
What will be an ideal response?
SNPs and restriction fragments
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Migration reduces genetic differences between populations due to gene ____ between the two
Fill in the blank with the appropriate word.
The femur in a snake and pelvis in a whale are examples of
A. homologous structures. B. analogous structures. C. homeotic structures. D. vestigial structures. E. heterologous structures.
The bacterium that causes spotted fever rickettsiosis (RMSF) is more likely to infect a human _____.
A) If an infected tick feeds for several hours B) When an infected tick initially penetrates the skin C) When contaminated tick feces dry and become airborne D) If the human is exposed to rodent feces containing the bacterium
An isograft has less chance of rejection than a xenograft because
A. new blood vessels need not be formed in the isograft B. the isograft is not composed of living tissue C. the graft composition of the donor and recipient are identical in an isograft D. there are no antigens in an isograft E. it is an allograft