Answer:
There is some debate about the definition of a species, especially across fields. However, what it likely being discussed here is the biological species concept which states that:
An organism is considered a new species when there is reproductive isolation from the population that they originated from. In other words, for two organisms to be the same species they must be able to reproduce to create viable (able to survive) and fertile (able to reproduce) offspring.
Reproductive isolation can occur by different means, classified as being prezygotic or postzygotic isolation. These include things like mechanical, behavioral, temporal, ecological, and geographical isolation for prezygotic isolation. And things like hybrid infertility and hybrid inviability for postzygotic isolation. These are not relevant to the question but they give you an idea of what you could look up if you wanted more information.
Answer:
Genes
Explanation:
Mendel's factors were what he suggested were "hereditary units". We now call these genes. Mendel correctly thought that there were different types of the same factor that could be passed on to offspring, making offspring different (such as a red flower vs a white flower). We now know these factors are genes, and the different "types" are known as alleles.
In Mendel's experiments, differences in factors led to different characteristics in the plants.
The answer is A. This is the only grassland competition.
Answer:
Importance of polar bears. Polar bears are at the top of the food chain and have an important role in the overall health of the marine environment. Over thousands of years, polar bears have also been an important part of the cultures and economies of Arctic peoples.
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Genetic engineering is technically the design of tools to expose the DNA of parents and offspring, and breeding practices are just like Punnett Squares.