Use the phenotypes of the f1 progeny to deduce the genotype and phenotype of each parent plant. complete the table by dragging the correct label to the appropriate location. labels can be used once, more than once, or not at all.

I found the whole exercise on the internet. Attached is an image of the table and the labels. The round (R) and yellow (Y) alleles are dominant over the wrinkled (r) and green (y) alleles. The F1 is resultant from a self-parented crossing.

For plant 1, the parent phenotype is the white label with a green and round pee, and the parent genotype is the blue label with "Rryy". The parent has this genotype and, therefore, phenotype because in order to only have offspring that are green it means that both alleles that are being carried by the parent for the colour are recessive, and in order to have offspring that are round and wrinkled the parent must have one allele that's for round shape and one allele that's for wrinkled shape. 

For plant 2, the parent phenotype is the white label with a yellow and round pee, and the parent genotype is the blue label with "RrYy". The parent has this genotype and, therefore, phenotype because in order to have offspring that are green and yellow it means that the parent must have one allele that's for green colour and one allele that's for yellow colour, and in order to have offspring that are round and wrinkled the parent must have one allele that's for round shape and one allele that's for wrinkled shape. 

For plant 3, the parent phenotype is the white label with a yellow and round pee, and the parent genotype is the blue label with "RRYy". The parent has this genotype and, therefore, phenotype because in order to have offspring are green and yellow it means that the parent must have one allele that's for green colour and one allele that's for yellow colour, and in order to only have offspring that are round it means that both alleles that are being carried by the parent for the shape are dominant.

For plant 4, the parent phenotype is the white label with a green and wrinkled pee, and the parent genotype is the blue label with "rryy". The parent has this genotype and, therefore, phenotype because in order to only have offspring that are green it means that both alleles that are being carried by the parent for the colour are recessive, and in order to only have offspring that are wrinkled it means that both alleles that are being carried by the parent for the shape are recessive.

How does a model demonstrate the structure of DNA

They used Tinkertoy-like models to show that DNA is shaped like a twisted ladder. ... The "steps" of the DNA ladder are pairs of bases: adenine (A) and thymine (T) or cytosine (C) and guanine (G). The order of the base pairs holds the specials code for how living things grow and develop.

Explanation:

Why are models used to represent DNA?

The nucleotides of DNA are arranged into a double helix based on the rules of base complementarity. Scientists build models based on existing data and use their models to explain and make predictions about natural systems. ... Use a model of DNA to explore and describe key features of the molecule.