Begin by making a list of questions that will help you conduct research on the topic. To get you started, here are some questions that may lead you to a better understanding of the topic: How does artificial selection differ from natural selection? How did modern dogs evolve? Who are their ancestors? What is a dog breed? What is a pedigree? What methods are used to breed dogs? Are there any ethical issues with these methods? What are the benefits and consequences of dog breeding? What are bulldogs like? What traits does the English bulldog have? Are bulldogs more healthy or less healthy than other breeds? What is genetic diversity? What is the current genetic diversity of the English bulldog? How does the genetic diversity of the English bulldog relate to the breed’s future viability? Now write down four more questions about bulldogs that will help you strengthen your arguments in your research paper.

New varieties. Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.

Dogs were probably domesticated by accident, when wolves began trailing ancient hunter-gatherers to snack on their garbage. Docile wolves may have been slipped extra food scraps, the theory goes, so they survived better, and passed on their genes. Eventually, these friendly wolves evolved into dogs.Jul 18, 2017

A dog breed is a particular strain or dog type that was purposefully bred by humans to perform specific tasks, such as herding, hunting, and guarding. ... Many different terms were used to describe dogs, such as breed, strain, type, kind, and variety.A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors from one generation to the next, most commonly humans, show dogs, and race horses.

Explanation:

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

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