Control group
Explanation:
Experiments are usually designed so that the differences between the experiment and control groups can be observed. 
- The experimental group is the group that follows the details of the hypothesis where variables are changed to see their causes and effects. 
- The control group is the standard by which the experimental group is compared with. 
- The variables are being tested for in the experimental group to see how they are changing . 
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Answer: a). AA
Explanation: Every trait is controlled by at least a pair of gene. Genes have different forms known as alleles. Alleles can be dominant or recessive. A dominant allele expresses itself in the presence of a recessive allele and masks the effect of a recessive allele. A recessive allele cannot express itself in the presence of a dominant allele and it's effect is masked by a dominant allele. Dominant alleles are usually written in upper cases such as A, T, while recessive alleles are usually written in lower cases such as a, t. The two alleles that determines a trait is called a genotype. A genotype can be homozygous if the two alleles are identical such as in AA or aa 
and can be heterozygous if the two alleles are not identical such as in Aa, Tt. 
 
        
             
        
        
        
Answer:
Geographers use maps and data to depict relationships of time, space, and scale. Geographers analyze relationships among and between places to reveal important spatial patterns. Geographers analyze complex issues and relationships with a distinctively spatial perspective.
Explanation:
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Answer:
relies on the evaluation of dreams and the unconscious desires.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants. 
A trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her. Some examples of traits in genetics are colorblindness, handedness, curly hair, height, complexion, weight, hair color, dimples, tongue-roll, etc.
This ultimately implies that, the manner in which living organism such as humans look and behave is largely dependent on both the traits inherited from their parents and the environment in which they grew up or stayed.
Hence, the behavioral genetics approach relies on the evaluation of dreams, unconscious desires, twin, family, and adoption studies which are used to investigate the gene possessed by living organisms or their environment interactions.