A) T<span>he evolution of multicellular life</span>
Every cell in our body has chromosomes.If it has xx combination of chromosomes then it has female characteristics and if it has xy chromosomes then it has male characteristics.....
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Answer:
The relationship data of the dominance for each trait between the alleles was available with Mendel. The purpose of the dihybrid cross was to determine the type of relationship that existed between the pair of alleles.
Answer:
The nervous system is stimulated from the environment, through sensory receptors. A stimulus is any form of energy that can be detected by the body. ... Animals normally only respond to stimuli which they select; they filter out certain stimuli that surround them, and react to others they choose to accept.