You study color variants of Arabidopsis hypotheticus, a plant with red flowers. You have obtained three pure-breeding mutant lines, all named for their place of origin. Two lines have white flowers (Aberdeen White and Victoria White), and one has yellow flowers (Kansas Yellow).
You begin your analysis by crossing each line with wild-type plants and selfing the F1 to produce an F2 generation.[Crosses between Aberdeen White and wild type, Victoria White and wild type, and Kansas Yellow and wild type] From these crosses you conclude that the mutations in all three lines are recessive to the wild type.

Crossing lines with the same recessive phenotype
You continue your analysis by crossing the Aberdeen White and Victoria White lines. This time you count the actual numbers of progeny in the two F2 phenotypic classes.
[Cross between Aberdeen White and Victoria White]
You also self several wild-type plants from the F2 and determine that some of them are pure-breeding. What can you conclude from these results?

From the results we may conclude that;

1. Aberdeen White and Kansas Yellow are alleles of different loci.

2. The lack of wild-type progeny in the F2 is the result of independent assortment

3. The F2 ratio is approximately 9:7

4. The F2 ratio results from complementary gene interactionction.

Explanation:

The tables below is a representation of the question with appropriate labelling.

In genetics a loci is a fixed position on a chromosome that may be occupied by one or more genes.

Wild type (WT) flower describes the phenotype of the typical form of a species as it occurs in nature.

A progeny — is a offspring or descendants.

The Laws of independent assortment describes that alleles for one trait segregate independently from alleles for another trait in metaphase of meiosis. Each allele combination is equally likely to occur in the progeny.

Like we have in the question the experiment showed that the two genes interact to produce the overall flower color (the phenotype); when genes work in tandem to produce a single gene product, it is described as a complementary gene interaction.

The wild-type action from both genes is required to produce the wild-type phenotype.

Mutation of one or both genes produce a mutant phenotype.

Mantle convection  is the slow  creepingmotion of earth's solid silicate  mantle  caused by  convection  currents carrying  heat from the interior  to the planet's surface.[1][2]  the earth's surface  lithosphere, which rides atop the  asthenosphere  (the two components of the  upper mantle), is divided into a number of  plates  that are continuously being created and consumed at their opposite  plate boundaries. accretion occurs as mantle is added to the growing edges of a plate, associated with  seafloor spreading. this hot added material cools down by  conduction  and  convection  of heat. at the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of  subduction  usually at an  ocean trench.[3]this subducted material sinks through the earth's interior. some subducted material appears to reach the lower mantle,[4]  while in other regions, this material is impeded from sinking further, possibly due to a phase transition from  spinel  to  silicate perovskiteand  magnesiowustite, an  endothermic reaction.[5]the subducted oceanic crust triggers  volcanism, although the basic mechanisms are varied. volcanism may occur due to processes that add buoyancy to partially melted mantle causing an upward flow due to a decrease in density of the partial melt.secondary forms of convection that may result in surface volcanism are postulated to occur as a consequence of intraplate extension[6]  and  mantle plumes.[7]it is because the mantle can convect that the  tectonic plates  are able to move around the earth's surface.[8]mantle convection seems to have been much more active during the  hadean  period, resulting in gravitational sorting of heavier molten  iron, and  nickel  elements and  sulphides  in the core, and lighter  silicate minerals  in the  mantle.

Idont really understand