1. list the distances between each pair of genes: (you figured this out in parts 1-3) beak color (y) and tail-feather length(l): beak color(y)and feather color (b): tail-feather length(l)and feather color(b):

Explanation: The question seems incomplete. However my response might assist you. It seems the last three questions are referring to everything you just worked on. So all you would have to do is refer to your previous answers. Note that the titles of the "part 1, 2, and 3" are titled "crossing beak color and tail-feather length", "crossing beak color and feather color", and "mapping tail-feather length and feather color".

1.List the distances between each pair of genes:

beak color and tail-feather length: 20 MU

beak color and feather color: 16 MU

tail-feather length and feather color: 4 MU

2.Which two alleles are the farthest apart?

(the one that is 20 MU apart) Y and L

3.Which two alleles are the closest together?

(the ones that are 4 MU apart) L and B

True or False: The diagram shows the correct genetic map for these three alleles on one chromosome.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

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