For Natural Science Guru labs
novakingwai
lab_notebook_7-1.docxTHIS SHOULD BE COMPLETED AND INCLUDED IN YOUR LAB NOTEBOOK.
I. List the 9 traits from the first website. Are you dominant or recessive for each trait and why?
II. Answer the journal questions and fill out the table from your virtual experiment. Sketch your animal below the table or include an extra piece of paper if you need it.
Journal questions:
1. What is the difference between a genotype and a phenotype?
2. How are alleles and traits related? Explain using an example of each.
3. In pea plants the purple flower color (P) is a dominant allele, while white flower color (p) is recessive allele. If a pea plant has the genotype Pp, what is its phenotype. Explain.
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Selected Genotype |
Selected Phenotype |
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III. Genetics Problems: INCLUDE LEGEND, PARENTS, AND PUNNETT SQUARE FOR EACH PROBLEM (IF YOU DO NOT YOU WILL EARN A ZERO FOR THIS SECTION)
1. In dogs, wire hair (H) is dominant to smooth hair (h). In a cross of a homozygous wire and a smooth hair, what will be the hair condition of the offspring? If litter-mates are inbred, what will be the phenotypic ratio of their offspring?
Legend: Parents:
Punnett Square: Answers:
2. In corn, green leaf is dominant (L) and albino leaf is recessive (l). Cross 2 heterozygous corn plants. What would be the genotypic ratio of the first generation offspring?
Legend: Parents:
Punnett Square: Answers:
3. In peas purple flowers are dominant to white flowers. If a white flowered pea plant is crossed with a purple flowered pea plant and they are both homozygous, what will be the genotype of the offspring? What will be the phenotype of the offspring?
Legend: Parents:
Punnett Square: Answers:
4. In humans a widow’s peak is dominant to a straight hairline. A heterozygous man with a widow’s peak and a homozygous woman with a straight hairline can produce what type of hairline in their offspring?
Legend: Parents:
Punnett Square: Answers:
5. In parakeets, the wild-type (green and yellow) is dominant to the sky-blue. Two wild type parakeets mate and produce a sky-blue offspring. What are the genotypes of the parents?
Legend: Parents:
Punnett Square: Answers:
