genetics.docx - Bio 151: Chapter 14&15 Worksheet 1) If...

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Bio 151: Chapter 14&15 Worksheet1)If short hair (L) is dominant to long hair (l), animals with LL and Ll have the samea. parentsb. genotypesc. phenotypesd. allelese. genes
2) If all offspring of a cross have the genotype Aa, the parents of the crosses would most likely be:
3) If tall (D) is dominant to dwarf (d) and two homozygous varieties DD and dd are crossed, then whatkind of offspring will be produced?
4) For each genotype below, indicate whether it is heterozygous or homozygousAA ___________________Bb ________________Pp ________________________5) For each genotype, determine what phenotype would be possible.Brown eyes are dominant to blue eyesBB ____________________Bb ___________________bb _______________________Round seeds are dominant to wrinkled seedsRR ____________________Rr ___________________rr _______________________6) A TT (tall) plant is crossed with a tt (short).What percentage of the offspring will be tall? ____________7) The allele N codes for a normal nose and the allele n codes for a green nose.If two individuals who areboth heterozygous at this gene location mate with each other, what combinations of alleles will theiroffspring have (genotypic ratio)?What will their noses look like (phenotypic ratio)?8) In pea plants, the allele for tall plants (T) is dominant to the allele for short plants (t).You observe thatthe offspring of a cross include 78 tall plants and 27 short plants. 1) What was the probable allelecombination of the two parent plants? 2) How would your answer change if the offspring included 121tall plants and 118 short plants?

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