<span>Crossing over contributes to variation in an offspring's traits by distributing random mixes of homologous chromosomes into gametes. These unique gametes (like sperm) will be combined with other unique gametes (like eggs) to make a unique DNA template in the offspring.</span>
I beloeve the awnser is "single"
Its a nucleotide.
This is the answer because they are the basic units of nucleic acids. These nucleotides are made up of a pentose sugar, a nitrogenous base, and a phosphate group.
Answer:
I'm actually working on this as well, haha!
Explanation:
The skeletal system can help protect internal organs from injury. For example, the skull protects the brain, while the thoracic cage protects the heart and lungs.
Answer: C. a double helix with bases inside the helix
