If you look at Cosmos episode 1, I'm sure you find an answer there.
I would say C! Most developing countries have high birth and death rates, while developed countries are more steady.
The Law of Superposition.
The Law of Superposition states that each layer is younger than the one beneath it.
The definition of Epistasis in gene biology is Choice D: when the allele of one gene masks the phenotype of another gene
Definition:
When the phenotypic effect of alleles at one gene are masked by alleles of another gene.
In essence, a gene is said to be epistatic when its presence suppresses the effect of a gene at another locus.
It is important to know that Epistatic genes are often called inhibiting genes because of their effect on other genes which are described as hypostatic.
Additionally, there are six common types of epistasis gene interactions:
- Polymeric gene interaction,
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True guards cells open during the day