Start with the p generation with the following genotypes (aa x aa). based on classical mendelian inheritance, how will a cross
between two homozygous parents, one dominant and one recessive, influence future generations?
the fı generation will show an even split between the dominant
phenotype and the recessive phenotype.
the fı generation will all show the dominant trait and future crosses will
continue to produce genotypes expressing the dominant trait
although the f1 generation will all show the dominant trait, the offspring
will all be heterozygous and increase chances of future variation
the fi generation will show a mix of the dominant phenotype and
recessive phenotype and over generations the recessive trait will increase
in number.

The correct option is Although the F1 generation will all show the dominant trait, the offspring  will all be heterozygous and increase chances of future variation.

Explanation:

The cross for the offsrings that will be produced by F1 generation is shown below:

         a          a

A      Aa       Aa

A      Aa        Aa

As we can see that all the offsprings in the F1 generation will have heterozygous genes but only the dominant trait will be seen in the phenotype of the F1 generation.

A cross between the F1 generation will give the following results:

         A          a

A      AA      Aa

a       Aa      aa

This cross shows that there will be increases genetic and phenotype variations in offsprings that will be produced by the F1 plants.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.