Biology Formative Assessment - Higher - Selective breeding Q1.
Many different types of animals are produced using selective breeding.
Some cats are selectively bred so that they do not cause allergies in people.
Many people have breathing problems because they are allergic to cats
The allergy is caused by a chemical called Fel D1
Different cats produce different amounts of Fel D1
A cat has been bred so that it does not produce FelD1.
The cat does not cause an allergic reaction.
Explain how the cat has been produced using selective breeding and describe any
disadvantages from selective breeding the cat in this way

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

What are they five steps of cloning?

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.