Breeding rabbits-- determine the relative positions of these three genes and the rfs between the first and second gene, and between the second and third gene.

h+ rightarrow one (dom), h rightarrow two heads (rec) e+ rightarrow long ears (dom), e rightarrow short ears (rec)
c+ rightarrow black (dom), c rightarrow white (rec)

cross e+ h c+ x e h c rightarrow 1000 offspring
e h+ c e h c
(gene order is drawn arbitrarily, and is unknown)
260 black, two-headed, long eared
280 white, one-headed, short eared
16 white, two-headed, long eared
14 black, one-headed, short eared
70 white, one-headed, long eared
80 black, two-headed, short eared
130 black, one-headed, long eared
150 white, two-headed, short eared

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.

a. 35°c

b. 25°c

c. 10°c

d. 40°c