SI is a base 10 standardized system. I hope this helped and if not I highly recremend talking to your teacher or a parent.
Answer:
Epithelia has polarity and is avascular.
Answer:
60%
Explanation:
Penetrance in genetics is defined as a proportion of individuals that carry a certain gene (mutation of the gene) with the expressed phenotype (trait). In the example above we wanted to know the penetrance of the PRSS1 Ala16Val mutation. Form 120 individuals, 72 of them expressed some evidence of pancreatitis (120-48). The proportion of them with the expressed trait can be calculated as 72:120=0.6 or 60%.