Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- Show your work please !!!!! Draw if needed I need to visual to understandarrow_forwardelp Normal ▾ B IU A - Corn Breeding / Genetic Problem A corn breeder is working with 2 inbred corn plants. He is interested in two traits: High yield (produces lots of corn) and drought tolerance (does not need lots of water). High yield (H) is dominant to low yields (h). Drought tolerance (D) is dominant to drought intolerance (d). M BEE Inbred 1 is true breeding for drought tolerance and low yield (DDhh). Inbred 2 is true breeding for drought intolerance and high yield (ddHH). In the parent cross (P) the corn breeder crossed inbred 1 with inbred 2. The resulting F₁hybrid (DdHh) was heterozygous for drought tolerance and high yields. Phenotypically all the corn needs little water to grow and produces lots of corn. This is the corn that is sold to farmers, planted in the Spring and harvested in the Fall. Explain why the farmer does NOT hold back some of the Fall harvested (F₂) kernels and plant them next Spring. You must show your work. (Hint: As a %, how many of the F2 kernels still…arrow_forwardA heterozygous tall yellow plant is crossed with a homozygous short green. What will be the genotypes 3. and phenotypes, and probabilities of the first generation? Genotype of the heterozygous tall, yellow plant Genotype of the homozygous short, green plant Genotypes Phenotypes Right handedness (R) is dominant over left (r) Browyn eves (B) are dominant over blue (b). A man who is blue eyed and right handed, whose father was left handed, married a left handed woman with brown eyes, whose mother was blue eyed. What are the possible phenotypes and genotypes of the offspring and the probability for each? 4. Genotype of the man Genotype of the woman Genotypes Phenotypes What is the probability of getting right handed offspring? What is the probability of getting blue eyed offspring? What is the probability of getting offspring heterozygous for both traits? What is the probability of getting offspring that are homozygous dominant?arrow_forward
- D) Genetics Problem show the table and word In certain breeds of chickens, the allele "B" is responsible for black feathers whereas the contrasting allele "b" produces feathers that are white. Another r pair of alleles influences the shape of the feathers. "F" produces straight feathers whereas the contrasting gene for "f results in the frizzled condition. Give the genotypic and phenotypic ratios to be expected from the following cross: white, frizzled hen with a heterozygous black, homozygous straight rooster. Genotypic Ratio: Phenotypic Ratio:arrow_forwardProblem) A university student is studying the inheritance of 2 genes of pea plants. Color of plant: Blue is dominant (B), and yellow is recessive (b) Spikes or no spikes: Having spikes is dominant (G), and having no spikes is recessive (g). Which of the following findings would indicate to the student that these two traits are located close together on the same chromosome? a) The traits show independent assortment b) All gametes of a double heterozygous individual (BbGg) are either BG or bg c) A double heterozygous individual has four types of gametes in approximately equal proportions: BG, Bg, bG, and bg d) Student finds that there is frequent crossing over between the 2lociarrow_forward11arrow_forward
- Can you please help?arrow_forwardProblem 1: The data in the table below show the results of the F2 generation for 7 of Mendel's crosses: P (FO) Cross F1 Generation Tall x short stem. Purple x white flowers Axial x terminal flowers Yellow x green seeds Round x wrinkled seeds Green x yellow pods Smooth x wrinkled pods Total 100% tall 100% purple 100% axial 100% yellow 100% round F2 Generation 100% green 100% smooth 100% dominant 787 tall, 277 short 705 purple, 224 white 651 axial, 207 terminal 6022 yellow, 2001 green 5474 round, 1850 wrinkled 428 green, 152 yellow 882 smooth, 299 wrinkled 14949 dominant, 5010 recessive Conduct a X² analysis to determine if these data are consistent with Mendel's law of segregation.arrow_forwardPractice with Crosses. Show all work! 6. A TT (tall) plant is crossed with a tt (short plant). a. What percentage of the offspring will be tall? 7. A Tt plant is crossed with a Tt plant. a. What percentage of the offspring will be short? 8. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). a. What percentage of the offspring will be homozygous (RR)? 9. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. a. What percentage of the offspring will also be homozygous?arrow_forward
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