Mendel grew pea plants to show that a single gene determines flower color. Plants with one or more dominant alleles (A_) produce purple flowers, and plants with two recessive alleles (aa) produce white flowers. In this example, flower color is the ____________________. gene locus exon trait dominant phenotype
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Mendel grew pea plants to show that a single gene determines flower color. Plants with one or more dominant alleles (A_) produce purple flowers, and plants with two recessive alleles (aa) produce white flowers. In this example, flower color is the ____________________.
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- Sets of basepair sugars that accounts for a specific trait is ____________Sam was found to be heterozygous for sickle-cell (Ss) trait. The alleles represented by the letters S and s areWhen a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream-colored. From a cross of two such F1’s, the F2 showed 32 white, 66 cream, and 30 yellow guinea pigs. How is this trait inherited? _______________ Identify the genotype of the white guinea pig. ________ Identify the genotype of the yellow guinea pig. ________ Identify the genotype of the cream-colored guinea pig. ________ Identify the genotypes and the corresponding phenotypes of the F2 progeny. Give the genotypic ratio. __________________ Give the phenotypic ratio. ___________________
- How did you identify Guinevere's genotype? is that trait recessive or dominant? What if Mike is type B, will it be possible that Guinevere's would still be type o?___________________ alleles are always expressed in the presence of another allele. recessive dominantWavy hair is intermediate to straight and curly hair. Similarly, medium-sized nose may be inherited if one parent has a large nose and the other parent has a small nose. James has wavy hair, large nose, and type A blood. His father is type O. What is the complete genotype of James? __________________ Nicole has straight hair, medium-sized nose, and type AB blood. What is the complete genotype of Nicole? __________________ Should James and Nicole marry, what is the probability that they will have a: Daughter with the same traits as Nicole? ______________ Son with the same traits as James? ____________________ Child with curly hair, small nose, and type O blood? _______
- In mammals, albinism is caused by an autosomal allele that interferes with skin pigment. Early one morning on your way to genetics class, you observe that two normally pigmented javelina parents have an albino piglet. What are the genotypes of the parents? _________________________________ What is the probability that their next five offspring will be albino? __________________________ What is the probability that 3 of the next 7 offspring will be normally colored?______________________ Describe the process by which you would test these normally colored offspring to see if they carried the albinism gene. What are the expected ratios from that test? You want to develop a strain of albino javelina for commercial use (the other really white meat). Describe how you would go about developing that strain starting with the 2 parents and the one albino offspring.Gina has blood type O. Her mother’s blood type is A. What are the possible genotypes of her father? Select Yes or No for all blank answers. AB Answer A Answer B Answer O AnswerFor each phenotype, list the genotype(s): Widow’s peak (W) is dominant to a straight hairline (w). _______________ widow’s peak (homozygous) _______________ widow’s peak (heterozygous) _______________ straight hairline
- Jane has type O blood. Her child has type O blood. George's blood type is homozygous B. Could George be the father of Jane's baby?________ -dominance is a melting or a blending of phenotypesShow the cross between a heterozygous purple flowered pea plant and a white flowered pea plant. Take a picture of your "answer." Do this by clicking on the picture frame and uploading your photo. Ensure that your picture includes your name.