Answer:
50
Explanation:
their child has a 50% chance of having boss type o and a 50% chance of having blood type a
 
        
             
        
        
        
the answer A, steroids ; separate the cytoplasm from the environment
        
             
        
        
        
Answer:
False.
Explanation:
Linked genes are the genes that are present on the same chromosome and can undergo the process the recombination. The recombinant progeny are obtained by the crossing of the linked genes.
The recombinant frequency and map distance can be deduced by the mapping of the linked genes. The genotype of the heterozygote cannot be deduced by examining phenotype and sometimes the recombinant progeny is completely different from the parents as well as from the heterozygotes.
Thus, the correct answer is false.
 
        
             
        
        
        
Answer:
Troponin and calcium ions.
Explanation:
Troponin is a component of thin filament along with tropomyosin and actin. It is a protein complex to which calcium binds and start the production of muscular force.
Calcium also playing a very important role in muscle contractions, it binds with troponin and helping to move tropomyosin.
When calcium ion attached to troponin, then conformational changes occurs in troponin shape and moves which allow tropomyosin going away from its inhibitory position from the myosin-binding sites on actin. After this, the energized myosin head starts binding to the actin molecules and starts the cross bridge cycle, which helping in shortening the muscle's fiber. 
 
        
             
        
        
        
Answer: haploid, diploid) cell
Explanation: