Birds have hollow bones due to the fact thay need to be as light as possible for their wings to generate enough lift for them to fly
1) autosomal dominant
2) autosomal recessive
3) X-linked dominant
4) X-linked recessive
Answer:
B. They all have the same genes but some have hair and some don't
Explanation:
Type I genes tend to be involved in immune response or sensory receptors while type III genes are involved in cell to cell signalling and type II genes are a complex mix of all three types.
