Consider the gene for the character “frecklesâ€. We’ll use “F†todesignate the dominant allele (which produces freckles), and “f†todesignate the recessive allele (no freckles).
​​​a.Suppose one parent has freckles. What are the possible genotypesfor that parent? ____________________
​​​b.Suppose one parent has no freckles. What do we know about thatparent’s genotype? ___________________
​​​c.If the parent with freckles is homozygous (FF), what proportion ofoffspring will have freckles?
​​​​A)None of them
​​​​B)25%
​​​​C)50%
​​​​D)All of them
​​​d.If an offspring with no freckles is produced, what do we know aboutthe genotypes of the parents, supposing ​​​​thatboth have freckles?___________________________________________________________________
Suppose I have 2 flowering trees, one that produces yellow flowers,while the other produces blue flowers. Moreover, I learn that eachtree is true-breeding, i.e., it is homozygous for flower color.Then I perform a cross between the trees, i.e., interbreedthem.
​​​a.Suppose all of the offspring trees produce greenish (intermediatebetween blue and yellow) flowers. What ​​​​kindof relationship between the alleles is indicated?_______________________________________
​​​b.Suppose the offspring trees all have some yellow and some blueflowers. What relationship between the ​​​​​allelesis indicated?_____________________________________________
A gene can have only 1 specific phenotypiceffect.​​True​​​​False
A gene having more than 1 phenotypic effect is called_______________________________.
Some characters (such as height and skin color) are known asquantitative characters.What does this mean? Give an example of a quantitativecharacter.