Answer:
b. 2
Explanation:
Humans have typically 23 pairs of chromosomes. Each pair is composed of a chromosome from the mother and another from the father. A specific locus in a chromosome is composed of two alleles. An allele inherited from the mother and the other allele inherited from the father.
 
        
             
        
        
        
Answer:
Cardiac muscle tissue is a type of tissue due to which left ventricle is formed. 
Explanation: 
Heart is a main organ of human body due to its function. Its main function is pumping of blood to the lungs and to all parts of the body. For this pumping, special type of tissues are required which has the property of elasticity. Cardiac muscles tissue has the property of contraction and relaxation. Cardiac muscles tissue is also called myocardium. 
 
        
             
        
        
        
The Haploid number is half (haploid cells are sex cells egg and sperm they have half as many chromosomes as the diploid cells which are normal cells ) of the chromosomes so that would be 12. To clarify that if a organism has 12 chromosomes and reproduce sexually it takes two 
parents each contributing ether a egg or sperm each egg or sperm contains half of the genetic 
<span>
material 
Your answer would be (6)
Hope this helps.
</span>
        
             
        
        
        
The answer is D. Mutualism