Helps maintain genetic variability in a population
Sefl incompatibility is a mechanisms in plants that help in preventing inbreeding and allows outcrossing. This is controlled genetically by one or more multi allelic loci and usually relies on the series of complex cellular process and interaction between pollen and the pistil. There are various types of self incompatibility used by angiosperm. In this process autogamy is prevented and allogamy is produced.
Answer:
The correct answer is osmosis is the movement of water across the membrane;diffusion is the movement of molecules from a higher to lower concentration with or without the presence of membrane.
Explanation:
Diffusion and osmosis are the two most important process of passive transport.Both diffusion and osmosis helps in the movement of water molecules from high water concentration region to region of low water concentration until equilibrium in both sides is reached.
Osmosis needs the presence of a semipermeable membrane to occur.
The steps for the formation of the enzyme pepsinogen in the correct order is as 1, 4, 2, 3.
Pepsinogen is a chemical that is created by the cells that exist in the stomach. During digestion, pepsinogen is converted into pepsin by the acid in the stomach, and pepsin is responsible for breaking down the proteins in food. The formation steps are as;
Step 1: The DNA strands unwind, and RNA polymerase binds to the template strand.
Step 2: The synthesis of mRNA begins. The amino acids assemble to form peptide.
Step 3: The mRNA undergoes intron splicing and exits the nucleus.
Step 4: The tRNA moves through mRNA with the activated amino acids attached to it.
The complete question is attached.
You can also learn about Pepsinogen from the following question:
brainly.com/question/29462356
#SPJ4
True, because the rain water mixes with oil and any particles on the roadway