Answer:
Increased frequency of the allele for sickle cell anemia
Explanation:
Sickle cell anemia is fatal in homozygous genotype. The homozygous genotype having two copies of the allele for sickle cell anemia is not favored by natural selection due to its reduced survival success.
However, the heterozygous genotype for sickle cell anemia with one allele for the disease exhibit malaria resistant. The presence of one allele is not fatal for the organisms as the presence of one normal allele ensures the formation of some normal hemoglobin protein and RBCs to support the oxygen delivery to the body parts.
The increased survival success of heterozygous genotype in malaria-prone regions allowed their natural selection. This increased the frequency of allele for the sickle cell anemia in the gene pool of the local population and increased the frequency of heterozygous dominant genotype.
III Eukaryotes.
Explanation: This is an animal cell. Plants and viruses do not have chromosomes. Only animals do.
Answer:
D)
Explanation:
The idea of uniformitarianism is important to understand the changes or history of earth and it states that earth undergoes uniform changes in the past and present.
The idea of uniformitarianism also concludes many things about objects beyond earth which states that the laws and processes remain the same everywhere in the universe and have in the past. Uniformitarianism says that rate of the process remains uniform through time.
Hence, the correct option is "D)"
Answer:
glucose is the food for producers. they make their own food with the photonic energy from the sun. this energy is then passed to primart consumer, then secondary consumers, then tertiary consumers. energy decreases as it climbs the food pyramid. only 10 percent of the previous tier is carried onto the next tier.
for example if plants had 10,000 kilocalories, grasshoppers would get 1,000 kilocalories,
frogs would get 100 kilocalories,
and snakes would get 10 kilocalories.
kilocalories are a unit of energy.
i hope this helped! have a nice day
