Consider the gene for the character “freckles”. We’ll use “F” to designate the dominant allele (which...

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Biology

Consider the gene for the character “freckles”. 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.

Answer & Explanation Solved by verified expert
3.8 Ratings (309 Votes)
a FF or Ff b ff c all of them as the genotypes of offsprings will either be FF or Ff d If no freckled offsprings are produced that means that both the parents are heterozygous ie they will    See Answer
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