I think it is c density and temperature
Answer: A Punnett square can be used to predict genotype and phenotypes of offspring from genetic crosses. ... In the P generation, one parent has a dominant yellow phenotype and the genotype YY, and the other parent has the recessive green phenotype and the genotype yy.
Explanation:
<span>The answer is Mathias Schleiden and <span><span>Theodor Schwann</span></span></span>
If my math is right its A) 7
because 189 divided by 27 is 7