The Toba super volcanic event caused a bottleneck in the human population by inducing an ice age .
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Answer:
Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms. Gregor Mendel, a scientist and Augustinian friar, discovered genetics in the late 19th-century. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring.
Explanation:
Menda discovered the fundamental laws of inheritance. Which mean that he made a conclusion that genes come in pairs & are inherited as distinct units. (One gene from each parent)
Viruses is like *cough cough* Ebola *cough cough* And the characteristics is welllllll it spreads
Living Organisms Respond to their Environment. All living organisms are able to react to something important or interesting in their external environment. For example, living organisms constantly respond to their environment. They respond to changes in light, heat, sound, and chemical and mechanical contact.