Answer:
Option D
Neither gene is significantly different
Explanation:
Tan Spore gene
Cross-over
Observed=189
Expected=177
Observed-Expected=189-177=12
Standard deviation,
Non-cross-over
Cross-over
Observed=139
Expected=151
Observed-Expected=139-151=-12
Standard deviation,
Chi-square value=0.813559+0.953642=1.767202
Rounding off to three decimal places, chi-square value is 1.767
Gray Spore Gene
Cross-over
Observed=204
Expected=216
Observed-Expected=204-216=12
Standard deviation,
Non-cross-over
Cross-over
Observed=124
Expected=112
Observed-Expected=124-112=12
Standard deviation,
Chi-square value=0.666667+1.285714=1.952381
Rounding off to three decimal places, chi-square value is 1.952
Degree of freedom=n-1 where n is sample size, the sample size here are 2 hence degree of freedom is 2-1=1
From chi-square table, when degree of freedom is 1, chi-square value is 3.841
Since for both genes, the chi-square values are less than 3.841 then we should accept that data since it’s not significantly different
Answer:
The correct answer is d . vena cava â right atrium â right ventricle â pulmonary artery
Explanation:
Normally blood from the inferior vena cava enters the right atrium, then it passes to the right ventricle then to the pulmonary artery that takes it to the lungs and back to the left atrium via the pulmonary veins and then to the left ventricle and then to the aorta and finally to systemic circulation.
Answer:
D) A drought reduces the amount of grass for rabbits to feed on.
Explanation:
This is the condition that shall result in the most competition.
This is because the grass shall be insufficient food for the rabbit population.
Therefore the rabbit population shall be struggling to feed on the scarce remaining grass and hence cause a terrible competition.
Answer: S-shaped back bo
Explanation: That was the only choice
Answer:3,4,5.
Explanation:
These supplements are just for complementing the naturaly available food subtances.And in some cases in adults to boost reduced quantities in old people.
However overconsumption of these materials have adverse effects Besides these products(minerals and vitamins can not replace the naturaly available components of fruits and vegetables, because they are synthetic, and the chemical components can affect the body physiological mechanisms especialy of the kidney and liver.Unlike natural components that are easily metabolise by the's ogans.