. While hiking your find a wild growing pea plant with purple flowers. You know that purple pea flowers are dominant to white pea flowers, but from looking at the plant, you cannot be certain if it is homozygous dominant or heterozygous.  Explain the cross you could set up to determine the genotype of the wild pea plant and which results would indicate it is heterozygous versus homozygous.

2. In garden peas, tall (T) vine is dominant over short (t) vine. Yellow (Y) seed color is dominant over green (y) seed color. Cross a heterozygous tall, yellow seeded plant with a heterozygous tall, yellow seeded plant. Genotypes of the parent plants Genotypes Phenotypes What is the probability for a tall offspring? What is the probability for a short offspring? What is the probability for a yellow offspring? What is the probability for a green offspring? What is the probability for a tall yellow offspring? What is the probability for a tall green offspring? What is the probability for a short yellow offspring? What is the probability for a short green offspring? Footer Connected

Mendelian Genetics Worksheet Name Hour Fill in the Punnett squares for each cross given to determine the phenotype and genotype ratio's of the offspring Crosses with one homozygous dominant parent: AA x AA A AA x Aa A АА х а A AA x aa A A A A A a A a a Offspring Genotypes: AA AA AA Aa Offspring Phenotypes: Aa Aa aa aa aa Dominant Dominant Recessive Dominant Recessive Recessive_ _ Crosses with one heterozygous parent: Aа х АА Аа х Аа Аа х аа A a A a A a A a A a a Offspring Genotypes: AA_ Aa_ aa AA Aa aa AA_ Aa aa Offspring Phenotypes: Dominant Recessive Dominant Dominant Recessive Recessive _ Crosses with one homozygous recessive parent: aa x AA aa x Aa аа х аа a a a a a a A A a A a a Offspring Genotypes: AA Aa_aa AALAA_aa AA Aa_ aa_ Offspring Phenotypes: Dominant Dominant Dominant Recessive_ Recessive_ Recessive _

1. If a purebred pea plant with purple flowers was crossed with a purebred pea plant with white flowers, all of the offspring's flowers ended up being purple. In this instancethe WHITE flower trait is considered to be what?

5. If flower color shows codominance, and R = red and r = white, what will the %3D %3D offspring of a cross between RR x rr look like? * 100% red 75% red, 25% white 100% red and white 100% pink 25% red, 50% red and white, 25% white

3. Beetles of a certain species may have green, blue, or turquoise wing covers. Virgin beetles were selected from a polymorphic (i.e. not a true-breeding stock) laboratory population and mated to determine the inheritance of wing-cover color. The crosses and results were as follows: Parents blue X green blue X blue 1 2 3 4 5 6 7 8 green X green blue X turquoise blue X blue a. blue X green blue X green turquoise X turquoise Progeny all blue 3 blue: 1 turquoise 3 green 1 turquoise 1 blue: 1 turquoise 3 blue: 1 green 1 blue: 1 green 2 blue 1 green: 1 turquoise all turquoise Explain how the genetic basis of wing-cover color in this species could be determined by one gene. b. Write the genotypes of all parents and progeny as completely as possible. (Use gene and allele symbols of your own choosing, but please define what they are.)

2. Dwarf tomatoes differ from the familiar tall type in having short, thick stems and deeper green, puckered, somewhat curled leaves. (This is an example of pleiotrophy.) The cross between pure breeding tall tomato plants and pure breeding dwarf tomato plants produces all tall plants. Which is the dominant allele? What would be the genotype and phenotype ratios? Dominant allele: Genotype: Phenotype:

6. There are two enzymes LDH1 and LDH2. The gene that encodes this enzyme is X-linked. You extract the enzyme from different cells in several people and carry out electrophoresis. Give the genotypes for each person Draw the banding pattern that you would expect in the gel. Male with Male with Female Female Heterozygous LDH1 gene homozygous female LDH2 homozygous for LDH2 for LDH1

3. You are studying single gene traits in peas. These are the traits you are following: Gene Symbol Alleles enistic Pairs Appeerance of Hybrid dominant ait) Seed eoler deteric Yellow pea is dominant to green Round pea is dominant to wrinkled Purple flower is dominant to white flowers Unripe pods are dominant to ripe pods Yly R/r Yellow P/p U/u ound Wrinkied Round Flower clor You cross pollen from a pea that is of genotype YyRrPpUu with ovules from a pea whose genotype is YYrrPpUU a. How many different types of gametes can the female produce? Pod color (up) b. How many different types of gametes can the male produce? C. What fraction of the progeny will be phenotypically identical the female parent? d. What fraction of the progeny will be phenotypically identical the male parent? e. What fraction of the progeny will be homozygous at all seven loci? f. What fraction of the progeny will be heterozygous at all seven loci?

3. While hiking your find a wild growing pea plant with purple flowers. You know that purple pea flowers are dominant to white pea flowers, but from looking at the plant, you cannot be certain if it is homozygous dominant or heterozygous. Explain the cross you could set up to determine the genotype of the wild pea plant and which results would indicate it is heterozygous versus homozygous.