Answer:
D. 48%
Explanation:
Using the Hardy-Weinberg equation;
p + q = 1
p² + 2pq + q² = 1
From the question,
64% of a remote mountain village can taste phenylthiocarbamide (PTC) = i.e p² = 0.64
and must, therefore, have at least one copy of the dominant PTC taster allele.
i.e 2pq
So. if p² + 2pq = 0.64
Then
p² + 2pq + q² = 1
0.64 + q² = 1
q² = 1 - 0.64
q² = 0.36
q = √0.36
q = 0.6
To find p; we have:
p + q = 1
p + 0.6 =1
p = 1 - 0.6
p = 0.4
SO for the percentage of the population that must be heterozygous for this trait (i.e 2pq)
we have:
= 2 × 0.6 × 0.4
= 0.48
= 48%
∴ the percentage of the population that must be heterozygous for this trait = 48%
Answer:
Absorption of light by chlorophyll a and b is essential for the process of photosynthesis
Explanation:
Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used. This indicate the relative importance of chlorophyll a and b in photosynthesis is the absorption of light by chlorophyll a and b is essential for the process of photosynthesis.
Answer: burning of Fossil fuels can disrupt the carbon cycle as it produces CO2 ,which causes environmental problems such as acid rain ,global warming , greenhouse effect etc.
Explanation:
A sexual reproduction since both a female and Male flower is needed, the pop pollen is used to create DNA diversity and cross pollination possible.