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The porcupine is a rodent with an unusual trait. Porcupines have sharp spines or quills that help protect it against its predators. This trait is different from other rodents because of its needle like quills. This animal is also similar to that of a hedgehogs.
1) A
2) B
3) B
4) C
5) B
6) C
7) D
8) B
9) A
10) A
Mutations (changes) to the DNA within the cells.
Answer:
1. an offspring with two identical alleles for a trait is homozygous.
2. only some traits are inherited
3. offspring inherit two alleles for a gene from each parent.
