Hox genes are often similar enough in sequence across lineages that a gene from a distant relative can be used to restore function to a mutated Hox gene, such as when a chicken Hox sequence restores function to a Drosophila Hox gene. What is the best evolutionary explanation for this

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.