Answer:
ecosystem has seen a decrease in wetland areas and ... The graph below shows the size of a population of foxes over a period of years. ... B) greater reproductive success ... A) Both species evolved through the process of ecological succession.
Explanation:
Answer : Option B) Density - dependent factor.
Explanation : Typhoid outbreak is dependent of the density as the people of the region are getting the water from the same source so, the density of the area is also an influencing factor in spreading the disease. The bacteria is also getting transmitted from one human to other human too.
Answer:
22 mu
Explanation:
Since maximum number of flies are observed with +pb and s++ phenotype, they are the parental combinations.
Minimum number of flies are observed with +p+ and s+b phenotype hence they are the result of double crossover.
Gene order would be +bp and s++ since it is the only case which would lead to production of above mentioned double crossover. Hence gene b is in the middle of genes s and p.
Single cross over between genes s and b will give progeny +++ and sbp.
Map distance between s and b loci = recombination frequency =
(number of recombinants/ total progeny)*100
= [(single cross over between s and b + double crossover)/total progeny]*100
= [(102+106+7+5/1000]*100
=(220/1000)*100
=0.22*100
=22 mu
DNA testing can be used to search for your genetic ancestors.
