Examlex
You notice that in most biology and genetics textbooks, the authors show that Gregor Mendel used flower color as one of his pairs of traits. The purple flower phenotype is dominant to the white flower phenotype. However, if you go back to Mendel's experiments, you see that he actually studied seed coat color. The purple seed coat phenotype was dominant to the white seed coat phenotype. Mendel did note that plants with purple seed coats had purple flowers and plants with white seed coats had white flowers. Is the gene for seed coat color pleiotropic because it also affects flower color, or are the seed coat color gene and the flower color gene very closely linked? To find out the answer to this question, you assume that the genes for flower color and seed coat color are different genes, and your null hypothesis is that they assort independently. You designate the flower color gene wf and the seed coat color gene sw. Plants that are WF__, SW___ have purple flowers and purple seed coats. Plants that are wf wf, ws ws have white flowers and white seed coats.
You do the testcross WF wf, SW sw X wf wf, sw sw and collect 15,206 offspring. What result would tell you that the wf and sw loci are probably the same, pleiotropic locus?
Ratchet
A mechanical device that allows continuous linear or rotary motion in one direction while preventing motion in the opposite direction.
IFI Fastener
An IFI fastener refers to a fastening device that adheres to standards set by the Industrial Fasteners Institute, often indicating a specific quality or dimensional guideline.
Radial Marks
Visible lines or marks on a component, such as a brake disc, indicating radial movement or stress which may suggest potential failure points.
Grade Fastener
A classification system for fasteners, such as bolts and screws, indicating their material strength and durability.
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