Which term describes tonicity of the external solution

Q1. Homeotic genes include a homeobox sequence that is highly conserved among very diverse species. The homeobox is code for that domain of a protein that binds to DNA in a regulatory developmental process. Which of would you then expect?

Q2. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is really observed.

Q3. A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test tube of water containing 0.02 molar glucose. Assume that glucose is not actively transported into the cell, which of the terms describes tonicity of the external solution relative to the cytoplasm of the cell?

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