If you wanted to identify what proportion of trait variation is due to the environment, you would do what?

Which of the following represent trait variation caused from genetic variation?

If you wanted to identify what proportion of trait variation is due to genetics, you would do what?

In this chapter, we focused on a mode of inheritance referred to as quantitative genetics, as well as many of the statistical parameters utilized to study quantitative traits. Along the way, we found opportunities to consider the methods and reasoning by which geneticists acquired much of their understanding of quantitative genetics. From the explanations given in the chapter, what answers would you propose to the following fundamental questions:

How do we assess environmental factors to determine if they impact the phenotype of a quantitatively inherited trait?

A dark-red strain and a white strain of wheat are crossed and produce an intermediate, medium-red F₁. When the F₁ plants are interbred, an F₂ generation is produced in a ratio of 1 dark-red: 4 medium-dark-red: 6 medium-red: 4 light-red: 1 white. Further crosses reveal that the dark-red and white F₂ plants are true breeding

Predict the outcome of the  and  generations in a cross between a true-breeding medium-red plant and a white plant.

A dark-red strain and a white strain of wheat are crossed and produce an intermediate, medium-red F₁. When the F₁ plants are interbred, an F₂ generation is produced in a ratio of 1 dark-red: 4 medium-dark-red: 6 medium-red: 4 light-red: 1 white. Further crosses reveal that the dark-red and white F₂ plants are true breeding

Assign symbols to these alleles, and list possible genotypes that give rise to the medium-red and light-red phenotypes.