Homozygous is the condition that the offsprings would have, if both their parents contribute identical versions of a gene.
<h3>What is the difference between homozygous and heterozygous ?</h3>
- Homozygous and heterozygous are terms that are used to describe allele pairs.
- Individuals carrying two identical alleles (RR or rr) are known as homozygous. 
- Individual organisms bearing different alleles (Rr) are known as heterozygous.
- Homozygous produce only one type of gamete whereas heterozygous produce two types of gametes. 
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Answer:
C. A concentration gradient must exist.
 
        
                    
             
        
        
        
Answer: D 
Explanation:
x+10x = Tx*+ Water: water molecules move | Potato x+10Water = Potato slice in pure water
so the Answer is D