It only one parent is an affected carrier of an autosomal dominant disorder, which one of the following statements is true? The offspring will have 25% chance of being an unaffected carrier.

The offspring will have a 50% chance of having the disorder.

The offspring will have a 100% chance of having the disorder.

The offspring will have a 25% chance of not inheriting the abnormal allele.

What is one affect on the australian environment due to the introduction of non-native european rabbits? (a) more grass grew in response to the need of the growing population of rabbits. (b) the rabbits balance out the food chain as they became a natural prey to many predators. (c) the rabbits the land by digging, which caused the soil to spread much needed nutrients. (d) the rabbits out-competed other small animals species and caused them to go extinct.