Why is color blindness more common in males? What will be an ideal response?
Color blindness is an X-linked trait, which means the gene controlling color vision is on the X
chromosome. You will recall from earlier chapters that human females have two X chromosomes
while human males have only one. As a result, if the male receives the faulty X he will express the
trait, but a female who receives one faulty X will not show the trait as her second X will express the
correct genes.
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To summarize the conclusions of modern human behavioral genetics research, behavior is influenced by _____________________, _____________________, and _____________________ factors
Fill in the blank(s) with correct word
Humans, and other animals displaying bilateral symmetry, are mirrored across which plane?
a. coronal b. transverse c. sagittal d. proximal
From what feature are jaws through to have
evolved? a. pharynx b. vertebrae c. legs d. arms e. gill arches
Parapatric speciation occurs most often ____.
A. within in the same home range B. populations inhabiting different areas while maintaining contact along a common border C. within a group of interbreeding populations D. on either side of geographic barriers E. by polyploidy