If a mother carries a recessive allele for a genetic disorder, such as cystic fibrosis, under what circumstances will her children inherit the disorder?

a. the children must be female like the mother to inherit the disorder.
b. the paternal grandfather must also carry the recessive allele.
c. the children's father must also carry the recessive allele.
d. the mother's father must also carry the recessive allele.

i think the answer is a, is that correct? ?

Agroup of students want to live a healthier life style they decide to use one of these following vegetable oils for cooking apex

Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere

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.