Answer:
Each of her parents must have one recessive gene for blond hair color
Explanation:
- Blond is a recessive trait
- Since Silvia is blond this means she has both copies of the recessive gene for hair color
- Therefore, both her parents have a recessive gene for blond hair and passed it down to her.
- The parents don't have blond hair because their dominant gene for browns masks the recessive gene for blond.
 
        
             
        
        
        
An experiment is a process where the a scientist tests and draws their evidence and data from. Hence, this process is where the hypothesis be supported or negated.
Variables are traits, factors, or characteristics that either manipulated or measured being the subject to become the data.
The independent variable is B. 
<span>the presence of the new antibiotic</span>
        
                    
             
        
        
        
<span>C. C6 H12 O6 + 6 O2 → 6 C O2 + 6 H2 O + energy </span>
        
                    
             
        
        
        
If two heterozygous individuals are crossed, the results of the cross are as follows:
- SS - spotted condition
- 2 Ss - Spotted condition 
- ss - non-spotted condition
<h3>What is an Heterozygous Cross:</h3>
According to this question, the gene coding for spotted condition. The allele for spotted condition (S) is dominant over the non-spotted condition (s). 
If two heterozygous Dalmatian dogs are crossed i.e. Ss × Ss, the allele combination for each gamete is as follows:
The following offsprings will be produced: 
- SS - spotted condition
- 2 Ss - Spotted condition 
- ss - non-spotted condition
Learn more about heterozygous cross at: brainly.com/question/13050360
 
        
             
        
        
        
Answer:
What does GGTCAATGCCATAAG into mRNA mean?
Explanation: