1 A) . If green is dominant wt (Y) and yellow is a recessive mutant condition (y), depict a Yy father mated with a YY mother in the Punnett. 1B) Considering the dominant allele, what colors are the parents in the cross above? Yy = _____________________ YY = _____________________ 1C) What colors are the offspring in the cross above?
1) By convention, the recessive trait will determine the abbreviation used to track crosses if it is a mutant condition, since it stands out in contrast to the rest of the population. For example, if pea pods are typically green in color, a mutant condition might result in yellow pea pods; therefore, the lowercase letter ‘y’ would be used to depict the mutant state, yellow, while uppercase ‘Y’ would depict the wildtype (wt) condition, green. Remember that the mutant condition is not necessarily always recessive.
1 A) . If green is dominant wt (Y) and yellow is a recessive mutant condition (y), depict a Yy father mated with a YY mother in the Punnett.
1B)
Considering the dominant allele, what colors are the parents in the cross above?
Yy = _____________________
YY = _____________________
1C) What colors are the offspring in the cross above?
1D) What is the
1E) What is the genotypic ratio of the offspring? (Remember, the genotypic ratio is based on their actual genetic make-up since Yy and YY are genotypically different from one another)?
1F) What does it mean if the genotype is referred to as Y_ ?*
*The dominant trait Y will appear phenotypically whether the genotypic condition is YY or Yy. In cases where the second allele is unknown, the nomenclature Y_ is used to indicate the second allele could be either Y or y.
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