1. Suppose that in outer space there exist creatures with dominant purple eyes (P) and recessive yellow eyes (p). Two purple-eyed creatures mate and produce six offspring. Four of them have purple eyes and two have yellow eyes. Complete the following: Parents: Phenotypes (offspring): Genotypes (offspring): 2. In a certain plant, yellow fruit is dominant to white fruit. A heterozygous plant with yellow fruit is crossed with a plant with white fruit. Show the requested information: Parents: X_ Phenotypic ratio: (offspring): Genotypic ratio: (offspring):

I. In the fruit fly Drosophila melanogaster, tan body color (B) is dominant to black (b), and dark red eyes (E) is dominant to bright orange (e). A black fly, heterozygous for eye color (Fly #1) is crossed to an orange eyed fly, heterozygous for body color (Fly #2). What are... Genotypes of the parents? x #2 Gametes from each parent? Ratios of gametes from each parent? Complete the following Punnett square. Indicate gamete genotypes from each parent and all offspring genotypes. Fly #1 What proportion of offspring are... Tan & dark red? Tan & orange? Black & dark red? Black & orange? Probability (P) of Aa Bb Dd = P (Aa) A. B. II. What is the probability that this pair of parents will produce the indicated offspring? Aa Bb DD x aa Bb Dd Aa Bb Dd. Punnett squares for each trait can help with this! I C. Mode of inheritance = || O IV BIO 340 ACTIVITY #3: HYBRID CROSSES, PROBABILITY & PEDIGREES Name (Last, First) III. For each of these three pedigrees, determine the likely mode of…

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1. Chinchillas are small, furry South American rodents. They were originally brought to the United States from Chile in 1918 and raised for their fur, and have become increasingly popular as cage pets. They come in a variety of colors, but the most common is gray. In chinchillas, gray fur is dominant to violet. If one parent is gray HETEROZYGOUS, and the other is violet, what is the probability in their offspring of: being homozygous dominant? ________% being heterozygous? ________% being homozygous recessive? ________% having violet fur? ________% 2. Trixie, a former cheerleader, just had a child. She isn't sure who the father is. Carrie is blood type A and the baby is type AB. Use your knowledge of genetics to help Trixie, and indicate whether each of the following men COULD be the father. If he could be the father, put down Yes. If not, just say No, which is perhaps what Trixie should have done. #9, the quarterback, who is type A homozygous ______ #10, the…

4. What is the probability that individual III-8 is a carrier?

1. During his study of the rare Idlewild Lady Slipper (a wild orchid), Dr. Jorge Whiteback discovered several variants of the typical "wild-type" phenotype. He found two varieties of lady slippers at different elevations: a lady slipper variety found in the valley with red flowers and a lady slipper found at higherelevations with white flowers. When Dr. Whiteback did controlled crosses between lady slippers with red flowers and lady slippers with white flowers, all the offspring of this cross had pink flowers. After allowing pinkflowering lady slippers to self-fertilize, the next generation of plants had 112 red flowering plants, 218 pink flowering plants, and 108 white flowering plants.1a) What mode of inheritance would best explain the results of Dr. Whiteback's crosses?b) How many genes and how many different alleles of these gene(s) are determining flower coloraccording to your mode of inheritance?c) Define alleles using the appropriate notation for your answer in (a) and use that…

O e. Parent 2: Parent 1: Parent 2: ¡Ai QUESTION 9 Bi QUESTION 8 Let's assume that, in dragons, red scales (B) are dominant to green scales (b), and long tongues (S) are dominant to short tongues (s). The genes that determine these characteristics assort independently. A homozygous red, long-tongued dragon is crossed with a homozygous green, short-tongued dragon. If an F1 dragon is crossed to a homozygous green and homozygous short-tongued dragon, what phenotypes and proportions are expected in the offspring? O a. 100% green and long-tongued O b. ½ green and short-tongued & ½ red and long-tongued O c. ½ red and short-tongued & ½ green and long-tongued O d.% red and long-tongued, % red and short-tongued, ½ green and long-tongued, % green and short-tongued O e. 9/16 red, long-tongued, 3/16 green, long-tongued, 3/16 red, short-tongued, 1/16 green, short-tongued Save and Submit to save and submit. Click Save All Answers to save all answers. 000 MacBook Air

5. In pea plants, pod shape may be inflated (I) or constricted (i). A pea plant homozygous dominant for pod shape is crossed with a pea plant that is homozygous recessive for pod shape. What is the percent of offspring that will be heterozygous for pod shape? (A) 0% (В) 25% (С) 50% (D) 75% (E) 100%

I. In the fruit fly Drosophila melanogaster, tan body color (B) is dominant to black (b), and dark red eyes (E) is dominant to bright orange (e). A black fly, heterozygous for eye color (Fly #1) is crossed to an orange eyed fly, heterozygous for body color (Fly #2). What are... Genotypes of the parents? Gametes from each parent? Ratios of gametes from each parent? Complete the following Punnett square. Indicate gamete genotypes from each parent and all offspring genotypes. Fly #1 What proportion of offspring are... Tan & dark red? Tan & orange? Black & dark red? Black & orange? Probability (P) of Aa Bb Dd = P (Aa) A. B. I II. What is the probability that this pair of parents will produce the indicated offspring? Aa Bb DD x aa Bb Dd Aa Bb Dd. Punnett squares for each trait can help with this! IV Mode of inheritance = C. I II BIO 340 ACTIVITY #3: HYBRID CROSSES, PROBABILITY & PEDIGREES Name (Last, First) III. For each of these three pedigrees, determine the likely mode of inheritance and…

4) In tomatoes, round shape (R) is dominant to pear shape (r). A student crossed a plant that had round tomatoes with a plant that had pear-shaped tomatoes and obtained the data below. What are the genotypes of the plants that were crossed. Briefly explain your answer. Phenotype Number of Offspring Round tomatoes 36 Pear-shaped tomatoes 34