Answer;
Heterozygote advantage occurs when heterozygotes have a higher fitness than do both homozygotes. In frequency-dependant selection, the fitness of a phenotype declines it it becomes too common in the population.
Explanation;
The heterozygotes have both alleles, which is needed for genetic variation. Heterozygotes are essential for there to be genetic variation in a population. In other words it is when When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. For example a sickle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.
-Frequency-dependent selection occurs when the fitness of a genotype depends on its frequency. It is possible for the fitness of a genotype to increase (positively frequency-dependent) or decrease (negatively frequency-dependent) as the genotype frequency in the population increases.
Answer: Cytoplasm, the semifluid substance of a cell that is external to the nuclear membrane and internal to the cellular membrane, sometimes described as the nonnuclear content of protoplasm. In eukaryotes (i.e., cells having a nucleus), the cytoplasm contains all of the organelles.
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Answer:
The best graphic that represent the growth of the cells is the plot #2
Explanation:
Using flow cytometry, a cell cycle analysis study uses a dye for DNA binding, and it is fluorescently labeled to allow stoichiometry of DNA to bind to DNA content.
During the phases, the DNA content will be:
G0 / G1 phase = 2n (diploid).
Phase S = 2n (duplication of DNA content)
G2 / M phase = 4n (content of tetraploid DNA 4n)
When cells are growing, a mutation will occur in the gene. This would lead to the cell cycle being unlikely to stop due to the checkpoint gene mutation, causing it to be unable to detect any damage. the cell cycle continues normally.
In exercise, cells that were in the G1 phase will reach the S phase. Therefore, the peak of that phase will be increased, and the peak of the G1 phase will decrease. The cells that were in the S phase will go to the G2 / M phase, which will increase the peak.
