Its A= They can release toxic elements into the groundwater or surface water, hope this helped you out some bit :)
Answer:
crossing over
Explanation:
This occurs during prophase I and metaphase two of the cell cycle. Two homologous sister chromatids pair up and exchange DNA in order to increase genetic variation.
Answer: pancreas- secretes enzymes
Gall bladder- stores bile
Liver:makes bile
Salivary glands: found in mouth
Explanation:
Answer:
E. that area of the membrane is in the absolutely refractory period.
Explanation:
Refractory period is a period during which neuron cell cannot be stimulated (depolarized). This is why the action potential can only travel in one direction from the neuron body towards axon.
Refractory period occurs because of the inactivation of voltage-gated sodium channels (while action potential is at its peak) which cannot be open for a certain period of time. and membrane cannot be depolarized.
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%.
