Are different forms of the same gene that are always found on the same position of two homologous chromosomes. a) alleles b) chromatids c) loci d) nucleotides

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .