An organism shows the dominant phenotype, then one of its genes has to be the dominant allele,
but you cannot be sure of the identity of the other allele
unless you do a test cross to see if the dominant parent
breeds pure. let's pretend that you are in the dog-breeding
business. you know that long hair on a “pooch hound” is a
dominant allele and short hair is recessive. you purchase
a male long-haired "pooch hound." how do you figure out if your
male “pooch hound” is homozygous or heterozygous for long hair?
which genotype of female should you breed him to?
if a proper test cross is used, what phenotypes of puppies would you see
if your male dog is heterozygous dominant?
what puppy phenotypes would you see if your male dog is homozygous
dominant?
- complete the punnett square to
show the test cross that would convince someone that your "pooch hound"
is homozygous for long hair.
male genotype: -
female genotype:

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.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.