5. The wood frog (Rana sylvaticus) is unable to breed successfully with the leopard frog (Rana pipiens)because their F1 hybrid offspring die early in embryogenesis. This type of reproductive isolation is:A. best categorized as a post-zygotic barrier known as behavioral F1 inferiorityB. best categorized as a post-zygotic barrier known as F2 hybrid breakdownC. best categorized as a post-zygotic barrier known as F, hybrid sterilityD. best categorized as a post-zygotic barrier known as F1 hybrid inviabilityE. best categorized as a post-zygotic barrier known as ecological F; inferiority

Introduction :- F1 hybrids are formed in the F1 generation or first filial generation , when male…

Answered: 5. The wood frog (Rana sylvaticus) is…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter21: Microevolution: Genetic Changes Within Populations

Section: Chapter Questions

Problem 5TYK

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1. The western coyote (Canis lupus latrans) can interbreed with the gray wolf (Canis lupus lupus) to produce healthy and fertile F1 hybrids, but these hybrids are usually unable to attract mates (either among themselves, or backcrossed to the western coyote or the gray wolf). This reproductive isolation: A. is a post-zygotic barrier known as behavioral F, inferiority B. is a post-zygotic barrier known as F2 hybrid breakdown C. is a post-zygotic barrier known as F1 hybrid sterility D. is a post-zygotic barrier known as F, hybrid inviability E. is a post-zygotic barrier known as ecological F, inferiority
2. A sample of 400 individuals is found to contain: 32 A1A1: 36 A1 A2 : 60 A1A3 57 A2A2 : 90 A2A3 : 125 A3A3 a) Find the gene frequencies after one generation of selfing ww b) Find the percent heterozygosity after one generation of selfing. w w c) Find the frequencies of each heterozygous type.
1. A male lion (Panthera leo) crossed with a female tiger (Panthera tigris) produces F, hybrid cubs which are called ligers, but these F, ligers (especially males) are typically infertile (as predicted by the British geneticist J.B.S. Haldane). This type of reproductive isolation: A. is a post-zygotic barrier known as behavioral F1 inferiority B. is a post-zygotic barrier known as F2 hybrid breakdown C. is a post-zygotic barrier known as F, hybrid sterility D. is a post-zygotic barrier known as F1 hybrid inviability E. is a post-zygotic barrier known as ecological F, inferiority
5. Hybridizations between Japanese rice (Oryza sativa japonica) and Indian rice (Oryza sativa ind result in F, hybrids that are both healthy and fertile, but when these Fi hybrids are crossed, the resu F2 generation is weak and infertile. This type of reproductive isolation: A. is a post-zygotic barrier known as behavioral F, inferiority B. is a post-zygotic barrier known as F2 hybrid breakdown C. is a post-zygotic barrier known as ecological F, inferiority D. is a post-zygotic barrier known as F1 hybrid sterility E. is a post-zygotic barrier known as Fi hybrid inviability
2. In the following types of matings, the phenotypes of the parents are listed together with the frequencies of phenotypes occurring among their offspring. Indicate the genotype of each parent (you may need to use testcrossesl). Parents Offspring I B:0 을 A: 을B 을 AB : B: A: 0 를 AB : 를 A a. Вx В Ь. Ох АВ Ox AB Bx A d. Bx A C. TV Sex Lin ko
1. If a set of parents both have Bb genotypes, how many different types of zygotes can they form? CHOICES: A. one. B. Two C. three.D four 2. Having black hair is represented by the following alleles: A, B, and C. Which of the following genotypes represent the alleles of having brown hair? CHOICES: A. aabbcc B. AaBbcc C. AAbbcc D. AABBCC 3. Two parents have normal vision, but their son is born colorblind. What must be the mother's genotype using XB for normal and Xb for color-blind vision? B. XBXB C. XBXb D. XbXb A. XX 4. The colorblind son grows up and marries a woman with normal vision. She does not carry the colorblind allele. Their genotypes are XbYb and XBXB,respectively. By using the Punnett square solve for the percentage of the phenotype. What is the percentage that their first child will be colorblind? CHOICES: A.0% B. 25% C. 50% D. 75% 5. Which of the following traits is NOT controlled by multiple genes? A.colorblindness C. freckles B.eye color D. hair texture
4. When the F1 bees were backcrossed to the inbred resistant line produced 4 types of offspring in equal numbers: ¼ if the back-cross offspring showed the complete hygienic behavior pattern¼ of the back-cross offspring showed none of the elements of hygienic behavior¼ of the back-cross offspring would uncap the cells of the diseased larvae but these workers would not remove the diseased larvae¼ of the back-cross offspring would remove the diseased larvae (once the experimenter had uncapped the cells of the diseased larvae) a. If the resistant behavioral pattern is due to two gene loci with two alleles each, can this account for the 4 phenotypes shown in the back-cross? How? b. If you use UURR (for the non-resistant inbred line) and uurr (for the resistant inbred line), what are the phenotypic and genotypic ratios for the F2 cross between these lines (i.e., F1 x F1)? Show your work: c. Given the genetic model given in part d, do the backcross offspring in part c (from an F1 x resistant…
7. Here are the results of a crossing trial with fruit flies (D. melanogaster) Parents: Ebony bodied, white-eyed 9 fly x Normal-bodied, red-eyed a fly • Both parents were from true-breeding (homozygous) lines • Ebony body means the body colour is black instead of orange F1: Males All white-eyed, normal bodied Females Red eyed, normal bodied F2: (200 offspring in total produced) Male Females Normal body, red eye Normal body, white eye Ebony body, red eye Ebony body, white eye Total 38 36 37 39 12 11 13 14 100 100 Explain the pattern of inheritance of each trait body colour and eye colour Write the genotype of the parents, F1 offspring and F2 offspring. (ii)
2. Male dragonflies of one species are unable to grasp the abdomen of female dragonflies of a different species securely enough to mate, due to poor alignment of the four wings on each insect. This type of interference during mating attempts between different dragonfly species is: A. an example of a pre-zygotic barrier due to behavioral isolation B. an example of a pre-zygotic barrier due to gamete isolation C. an example of a pre-zygotic barrier due to mechanical isolation D. an example of alpre-zygotic barrier due to habitat isolation E. an example of a pre-zygotic barrier due to temporal isolation
11. A polygenic trait is also called multiple a. continuous trait holandric gene d. X-link gene b. A plant bearing pink flowers is allowed to pollinate itself. Every generation thereafter, the plant still produces pink flowers. This condition is known as hybridization 12. C. pure breeding a. b. incomplete dominance d. segregation 13. A homozygous red-flowered plant was crossed with a homozygous white-flowered plant and resulted in an offspring with red flowers. This demonstrates a case of dihybrid cross monohybrid cross a. C. b. dominance d. pure breeding How many chromosomes does a human gamete have? 14. 12 a. C. 24 b. 23 d. 46 If a heterozygous tall plant (TI) is crossed with a short plant (t), how many percent of the offspring are heterozygous tall? 15. a. 25% с. 75% b. 50% d. 100% Critical Thinking Are you in favor of the idea that couples should undergo genetic counseling? Why? Explain why Gregor Mendel chose pea plants for his experiments. Albinism is caused by a mutation;…
1.Which among the following statements is INCORRECT? A.Phenotype is the pair of genes that carries the genetic makeup of an organism B.Homozygous is a combination of two dominant or two recessive allele C.A recessive allele must be received from both parents to bring about a recessive phenotype D.Heterozygous is a combination of one dominant allele and one recessive allele
3. Codominance is when two dominant alleles of contrastingpair fully expressed at the same time in heterozygousindividual. Which of the following situation is an example ofcodominance?A. Jo mated the red bull with the white cow to produce a roan cow.B. Melissa traces her blood type by crossing the blood type of herparents.C. James passed a genetic disorder hypertrichosis pinnae aurisor hairy ear to his son.D. Tess crosses the red carnation flower plant with white flowercarnation plant to produce a pink flower plant.

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