If a chicken has black and white feathers, how could you describe the genes for feather color? If a plant has yellow flowers and is crossed with a plant with red flowers and the resulting offspring has orange flowers, what can you infer about this plant's genetics?

In a plant, stems can appear fuzzy or smooth. The allele for fuzzy (F) is dominant.  These plants can also have blue (B-) or white flowers.  White is the recessive trait.  A cross was made between plants heterozygous for both traits.  You observed 290 blue fuzzy, 80 blue smooth, 70 white fuzzy, and 40 white smooth plants.  Are your observations consistent with your expectations?

Red flowering plant are crossed with white flowering plant. The offspring shows: 1 red: 2 pink: 1 white. What are the genotypes of the parents?

You inspect an ear of corn and find the following number of kernels: 461 red and starch, 142 red and sweet, 156 yellow and starchy and 53 yellow and sweet. a. What genotype did the parent corn plants probably have? b. Support your answer by working out the cross with a Punnett square

Imagine you are given two tall plants, but you do not know their genotype (see Figure 16-12). There are three possibilities—they might both be TT or both Tt or one TT and the other Tt. Imagine you cross the two plants, wait for them to produce seeds, and then plant the seeds. If all resulting plants are tall, can you then determine what the genotypes of the two parents are? If approximately half the resulting plants are tall and about half are short, can you then figure out the genotypes of the parents?

Imagine you are crossing two plants that have these two genotypes—Tt and tt. What are the two genotypes of the gametes that the Tt plant can make? What is the one genotype of the gametes that the tt plant can make? Set up a Punnett square to analyze the cross. Does the Punnett square need to have four boxes or just two? If you were crossing a TT plant with a tt plant, how many boxes would be necessary in a Punnett square?

Cross a true-breeding plant that produces yellow seeds with a plant that produces green seeds. a) Using the table below, specify the notation that you will use. b) What are the genotypes of the parent plants? c) Draw the Punnett Square for the cross. d) Write the expected genotypic ratio of the potential offspring. e) Write the expected phenotypic ratio of the potential offspring. Character Flower color Flower position Seed color Seed shape Pod shape Pod color Stem length ©2012 Pearson Education, Inc. Dominant Purple Axial Yellow Round Inflated Green Tall Traits Recessive White Terminal Green Wrinkled Constricted Yellow Dwarf

A student observes corn to analyze the outcome of two genes--  The Red gene (R or r) where purple (R) is dominant to yellow (r) and the Sugar gene (S or s) where smooth (S) is dominant to wrinkled (s). The student predicts the parent’s genotypes are RrSs and rrss. How many possible gametes would be formed by each parent? Parent 1 would have 2 gamete combinations and Parent 2 would have 2 gamete combinations Parent 1 would have 4 gamete combinations and Parent 2 would have 2 gamete combination Parent 1 would have 4 gamete combinations and Parent 2 would have 1 gamete combination Parent 1 would have 4 gamete combinations and Parent 2 would have 4 gamete combination

In a particular plant, leaf color and leaf shape are controlled by two linked genes. Leaves of the wild-type plant are red. A recessive mutation in this gene causes white leaves. Wild-type leaves are pointed and a recessive mutation in this gene causes them to be smooth. The following cross was performed: Heterozygous red, pointed 43 white, smooth 42 red, pointed 8 white, pointed 7 red, smooth Homozygous white, smooth RESULTS: What is the recombination frequency between the gene for leaf color and the gene for leaf shape?