While there is no graph provided and I cannot find the graph online, I will base my answer through theory.
In theory, the most common blood type is O+, followed by A+, then B+, then AB+. Rh negative blood is deemed to be rare. While the most common blood type is O+, the same blood type is also called the "universal donor" as a type O+ blood has no antigens attached in red blood cells therefore the probability of adverse reactions (i.e. hemolytic reactions) when transfused to other blood types are close to nil. In an emergency situation, wherein there is not enough time to do proper crossmatching, blood type O+ can be used therefore supplies of blood type O+ are easily depleted.
It means that two chromosomes
have the same genes, or variations fo the
same genes at the same loci on the chromosomes. Variation
of the same gene is what makes up
alleles. Homologous chromosomes
are similar in size and structure. In
diploid organisms, each chromosome in the pair is derived from each parent.
The population will increase causing an overpopulation of rats.
It’s begins to break down and slow down pace