How can you determine the genotype of a plant showing the dominant phenotype of red color?
A. The phenotype reflects the genotype, so the plant must be homozygous for the trait.
B. Cross the red plant with a white plant to see if any white plants appear.
C. Cross the red plant with other red plants to see if any white plants appear.
D. Cross the red plant with a white plant to see how many red plants appear.
E. Cross the red plant with another red plant, and then cross the F1 population with each other to see if any white plants appear.
B. Cross the red plant with a white plant to see if any white plants appear.
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In humans, if non-disjunction led to an individual with a genotype of XO, that person would
A. be female because each cell lacks a Y chromosome. B. be male because each cell has only one X chromosome. C. display both male and female characteristics. D. not survive.
The insulin receptor is an example of a(n) ____
a. G-protein-coupled receptor b. hydrophobic receptor c. hormone receptor d. receptor tyrosine kinase e. ion channel receptor
The number of chromatids present in a duplicated chromosome is
a. 1. b. undetermined. c. half that of an unduplicated chromosome. d. 2. e. 4.
This class of antibodies is responsible for many allergies and may help protect against parasitic worm infections.
A. IgG B. IgC C. IgE D. IgD