Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 13, Problem 7GP
Several alleles affect traits of roses, such as plant form and bud shape. Alleles of one gene govern whether a plant will be a climber (dominant) or shrubby (recessive). All F1 offspring from a cross between a true-breeding climber and a shrubby plant are climbers. If an F1 plant is crossed with a shrubby plant, about 50 percent of the offspring will be shrubby; 50 percent will be climbers. Using symbols A and a for the dominant and recessive alleles, make a Punnett- square diagram of the expected genotypes and
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Students have asked these similar questions
A researcher at ASU is studying the exotic Unicorn Fairy plant. The plant has three genes of
interest with the dominant alleles being T-tall, H=hairy leaves and P=purple flowers. The three
genes are located in different chromosomes. A trihybrid plant is crossed with a plant that is
heterozygous for T and homozygous recessive for the other two genes. What is the probability of
getting offspring that is tall, has hairy leaves and white flowers?
9/64
5/8
8/64
O 3/64
O 3/16
Tallness (T) in snapdragons is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?
Group of answer choices
A. TtRr–tall and red
B. TtRr–tall and pink
C. ttrr–dwarf and white
D. TTRR–tall and red
E. ttRr–dwarf and pink
Tallness (T) in a certain plant is dominant to short (t), while red (R) flower color is dominant to yellow (r). The heterozygous condition results in orange (Rr) flower color. A short plant with red flowers, is crossed with a plant homozygous for tallness and yellow flowers. What would be the genotype and phenotype of the F1 individuals?
ttRr—short and orange
ttrr—short and yellow
TtRr—tall and red
Ttrr—tall and yellow
TtRr—tall and orange
Chapter 13 Solutions
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
Ch. 13 - A heterozygous individual has a _______ for a...Ch. 13 - An organisms observable traits constitute its...Ch. 13 - Prob. 3SQCh. 13 - The second-generation offspring of a cross between...Ch. 13 - Prob. 5SQCh. 13 - Refer to question 5. Assuming complete dominance,...Ch. 13 - Prob. 7SQCh. 13 - Prob. 8SQCh. 13 - The probability of a crossover occurring between...Ch. 13 - True or false? All traits are inherited in a...
Ch. 13 - Prob. 11SQCh. 13 - The phenotype of individuals heterozygous for...Ch. 13 - Prob. 13SQCh. 13 - Match the terms with the best description. ______...Ch. 13 - Assuming that independent assortment occurs during...Ch. 13 - Refer to problem 2. Determine the predicted...Ch. 13 - Refer to problem 2. Assume a third gene has...Ch. 13 - Prob. 4GPCh. 13 - Suppose you identify a new gene in mice. One of...Ch. 13 - Mendel crossed a true-breeding pea plant with...Ch. 13 - Several alleles affect traits of roses, such as...Ch. 13 - Prob. 1DAACh. 13 - Prob. 2DAACh. 13 - Prob. 3DAACh. 13 - Mutations in the TYR gene may render its enzyme...Ch. 13 - In sweet pea plants, an allele for purple flowers....Ch. 13 - Red-flowering snapdragons are homozygous for...Ch. 13 - A single allele gives rise to the Hbs form of...
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- Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?arrow_forwardIf Dominant Tall ( TT ) plant with Axial Flowers ( AA ) is crossed with recessive ( tt ) plant containing terminal flowers ( aa ) following Mendelian Genetics . What will be genotypes and phenotypes in F2 generation ? Write numbers of genotypes .and phenotypes also . Use the same symbols .arrow_forwardIf a homozygous tall stem (AA) plant is crossed with a homozygous dwarf stem (aa), knowing that the tall stem is dominant over the dwarf stem, what will the genotypes and phenotypes of F1 and F2 be like?arrow_forward
- Two pure-breeding lines of petunia plants are crossed. Line 1 plants grow to a height of 54 cm, and Line 2 plants grow to a height of 18 cm. Petunia plant height is controlled by three genes, A, B and C. Line 1 has the genotype A₁A₁B₁B₁C₁C₁, and line 2 has the genotype A2A2B₂B₂C₂C₂. Assume that genotype alone determines plant height under ideal growth conditions and that the alleles of the three genes are additive. If the F1 plants are self crossed, what is the expected proportion of F2 plants with the genotype A₁A₁B₁B₁C₁C₁ 1/8 1/32 1/16 1/4 1/64arrow_forwardCan you please help find how many black leaves there are?arrow_forwardThe trait of medium-sized leaves in iris is determined by the heterozygous genotype RIr. Plants with large leaves are IRIR, whereas plants with small leaves are l'I A cross is made between two plants, each with medium-sized leaves. If they produce 80 seedlings, what would be the expected number of seedlings with small leaves? O a) 0 O b) 20 c) 40 d) 80arrow_forward
- In a genetic cross between a homozygous tall plant with homozygous purple flowers and a homozygous short plant with heterozygous purple flowers, how many short plants will you expect in the F2 generation if you sample 36 individuals? Both tall and purple are dominant.arrow_forwardIn corn, the gene for kernel color has two alleles: purple (P) or red (p). There is also a gene where the dominant allele (I) prevents kernel color, whereas the recessive allele (i) allows color to develop. If you cross plants heterozygous for both traits, what will be the expected phenotypic ratio of the offspring? What is the probability that the genotype of an offspring will be PPii? A child with Type O blood is born to a mother with Type A blood. What is the genotype of the child? What is the genotype of the mother? What are the possible genotypes of the father?arrow_forwardWaxy endosperm (wx), shrunken endosperm (sh) and yellow seedling (v) are encoded by three recessive genes in corn that are linked on chromosome 5. A corn plant homozygous for all three recessive alleles is crossed with a plant homozygous for all the dominant alleles. The resulting F1 are then crossed with a plant homozygous for the recessive alleles in a three point test cross. The progeny of the test cross are: wx sh WX SH V WX SH V Wx sh WX sh V SH v SH V V 87 1,515 94 WX 1,531 3,479 292 WX Wx sh v 3,478 280 a. Determine the order of the genes on the chromosome. b. Calculate the map distances between the genes. c. Determine the cc and I.arrow_forward
- The trait of medium-sized leaves in iris is determined by the heterozygous genotype RT. Plants with large leaves are IKIK, whereas plants with small leaves are l'I A cross is made between two plants, each with medium-sized leaves. If they produce 80 seedlings, what would be the expected number of seedlings with small leaves? O a) 0 O b) 20 Oc) 40 Od) 80arrow_forwardThe best way to determine the genotype for a plant presenting with dominant phenotypes is by performing a test cross. Test crosses are always performed with a true-breeding plant with recessive traits. What would be the phenotype and genotype of the plant you would need to perform the test-cross with your tall, purple plant?After performing the test-cross with your unknown purple, tall plant you find that all your resulting plants are tall; half have white flowers, and half have purple flowers. What was the genotype of your original purple, tall plant?arrow_forwardWhen traits show complete dominance, the genotype can be revealed by a test cross. In the example of tall and dwarf plants (Figure) why is it necessary to use the dwarf parent? In general, why is it necessary to use a parent that is homozygous recessive?arrow_forward
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