Glands: - glands that secrete substances outward through a duct to the outer surface of the body and not into the bloodstream. Assist in protecting body form disease and maintain homeostasis
Hair: - hair shaft is the visible part, root is embedded in dermis, follicle-root and covering
Nails: - protects ends of fingers and toes. Nail root, nail bed, nail body, lunula
Answer: D
Explanation: I had the same question
The expression of certain genes at different levels may cause color variation in the butterfly wings.
<h3>What is gene expression?</h3>
Gene expression is the cellular process associated with the transcription of certain genes in particular cell types.
In this case, the trait color in butterfly wings is associated with the differential expression of certain genes during development.
The variation in color may be due to the expression of different alleles in butterflies or the same allele at different levels.
Learn more about gene expression here:
brainly.com/question/20682055
<span>Birds respond to temperature, food availability, and weather conditions.</span>
Answer: If you're talking about the Edgenuity question, B and D are the answers. (Cell contains hereditary information that is passed from cell to cell during cell division and all cells perform similar metabolic activities.)
Explanation:
