Corncobs are often used for showing innende patterns. All the grains on a cob have the same
female parent, and with careful pollination they
can also have the same male parent. A variety
with coloured and starchy grains was crossed
with a variety with white and waxy grains. The F,
grains were all coloured and starchy. The F, plants
grown from these grains were crossed (F, F,).
1 Calculate the expected ratio of F, plants,
assuming that the genes for coloured/white
and starchy/waxy grains are unlinked. Use
a genetic diagram to show how you reached
your answer.
[3]
2 The actual frequencies were:
1,774
coloured starchy
coloured waxy
263

answer; hypnagogic sensations)

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.