Frequency of allele a1 is 75%, p=0.75
Frequency of allele a2 is 25%, q=0.25
If a population is in Hardy-Weinberg equilibrium then:
p2+2pq+q2=1
<span>p2 is the frequency of genotype a1a1 (homozygous),</span>
2pq is the frequency of genotype a1a2 (heterozygous),
q2 is the frequency of genotype a2a2
<span>The proportion of individuals with genotype a1a2 is then 2*0.75*0.25=0.375 (37.5%).</span>
Genetic engineering is due to the human selection of desired phenotypes, whereas natural selection is a slow process of differential survival and reproduction.
<h3>What does natural selection mean?</h3>
According to the evolution theory, natural selection is a slow process of differential survival of the fittest organisms in a given environment.
Conversely, genetic engineering refers to the molecular biology techniques used in the laboratory to produce organisms expressing desired phenotypes.
In conclusion, genetic engineering is based on human molecular biology techniques, whereas natural selection refers to differential survival and reproduction in nature.
Learn more about genetic engineering and natural selection here:
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I think the correct answer would be D. The specialized structure that helps a vascular plant to soak up water after a rainfall in a desert would be the extensive shallow root system with root hairs. An example of this would be the cactus. It has a root system that is very different from any plant that is not found in the desert. The roots are found just exactly below the surface. It is ready anytime to suck up water from rain or snowfall and transport it to the stem of the plant. Also, after a rain, the cactus would grow tiny roots in its body to aid in the absorption of water more quickly.
Answer:
Front the atmosphere that's from environment
Answer:The Ozone Hole. One billion years ago, early aquatic organisms called blue-green algae began using energy from the Sun to split molecules of H2O and CO2 and recombine them into organic compounds and molecular oxygen (O2). ... As oxygen in the atmosphere increased, CO2 decreased.
