Which statement about sex-linked traits in humans is correct?

1.) hemophilia and color blindness are examples of recessive sex-linked traits.

2.)the gene involved in most sex-linked traits is located on the y-chromosome.

3.)the sex-linked traits are found more frequently in females than in males.

4.)there are no sex-linked traits in humans.

The correct answer is option 1.

Explanation:

Hemophilia and color blindness are recessive sex-linked traits in humans that present on the X-chromosome. Hemophilia is a blood clotting disorder that prevents blood clotting.

Color blindness is the disorder that develops a condition where an individual can not distinguish between red and green color.

It is more frequent in males than females because males have only one copy of the X- chromosome.

Thus, the correct answer is option 1.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

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.