Answer:Um the answers would be nice
Explanation:
 
        
                    
             
        
        
        
Answer:
D. If all of the offspring are short-tailed, the unknown individual is the homozygous dominant genotype.
Explanation:
The short tail phenotype is completely dominant over the long tail phenotype. When a short tailed salamander with unknown genotype is crossed with a homozygous recessive long tailed salamander, the cross is called testcross. Lets assume that the allele "S" gives "short tail" phenotype while the allele "s" gives "long tail" phenotype. 
If the "short tailed salamander" with unknown genotype is homozygous dominant (SS), the process of the testcross will express only dominant trait (cross 1). On the other hand, if the "short tailed salamander" with unknown genotype is heterozygous dominant (Ss), segregation of alleles during gamete formation would form two types of gametes (cross 2). The 50% progeny would express the "long tail" phenotype while rest 50% will express the "short tail" phenotype. 
 
        
             
        
        
        
All cells have DNA, cytoplasm, and ribosomes
 
        
             
        
        
        
Answer:
... A disease resulting in the deaths of one third of a dense population of bats in a cave would be a
 
        
             
        
        
        
There is too much water pressure. If you go down too deep, your lungs and internal organs would all burst.. who would want that?
So basically, a human would need more protection than what scuba gear would offer. (ex: a submarine would be so much more suitable)