Humans have a much greater degree of binocular vision than mice. Which of the following is/are also very likely to be true of humans?
A) More RGCs express EphB1 than in mice.
B) Fewer RGCs express EphB1 than in mice.
C) Expression of Zic2 in the retina is more restricted than in mice.
D) More RGCs cross the midline than in mice.
E) b, c, and d

Question

Quizplus · Accepted Answer

Fewer RGCs cross the midline in animals with binocular vision-in other words, more remain ipsilateral. Since more RGCs remain ipsilateral, we infer that they are repelled by midline Ephrin-B2 and so most likely express EphB1 as a result of Zic2 expansion in the retina.

Humans Have a Much Greater Degree of Binocular Vision Than