1. For each of the diploid genotypes presented below, determine the genetic make upfor all of the possible haploid gametes16) RY, Ry, rY, rya. Rr Rb. RrYy Ruc. rrYyd. RrYYe. RrYyBb2. Use the Punnett square to determine all of the offspring genotypes (and their relativefrequencies) from the following crosses:a. Rr x RrGb. Rr x rrc. RR x Rr3. In the problem above, the "R" allele is a dominant allele specifying for round seeds(in peas), while the "r" allele is the recessive allele specifying for wrinkled seeds.Give the expected frequencies (as percentages or ratios) for the phenotypes of theoffspring resulting from each of the crosses above.4. A brown mink crossed with a silverblue mink produced all brown offspring. Whenthese F₁ mink were crossed among themselves they produced 47 brown animalsand 15 silverblue animals (F2 generation). Determine all the genotypes andphenotypes, and their relative ratios, in the F₁ and F2 generations.5. In sheep white is due to a dominant gene (W), black to its recessive allele (w). Awhite ewe mated to a white ram produces a black lamb. If they produce anotheroffspring, could it be white? If so, what are the chances of it being white? List thegenotypes of all animals mentioned in this problem.6. In tomatoes the texture of the skin may be smooth or peach (hairy). The Ponderosavariety has fruits with smooth texture. The red peach variety has fruits with peachtexture. Crosses between the two varieties produce all smooth fruits. Crossesbetween these smooth fruited F₁ plants produced 174 peach textured fruits and 520smooth textured fruits. How are these skin textures inherited?7. A brown mouse is mated is mated with two female black mice. When each femalehas produced several litters of young, the first female has had 48 black and thesecond female has had 14 black and 11 brown young. Deduce the pattern ofinheritance of coat color and the genotypes of all of the parents.

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Description: 1. For each of the diploid genotypes presented below, determine the genetic make upfor all of the possible haploid gametes16) RY, Ry, rY, rya. Rr Rb. RrYy Ruc. rrYyd. RrYYe. RrYyBb2. Use the Punnett square to determine all of the offspring genotypes

Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

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Biology

1. For each of the diploid genotypes presented below, determine the genetic make up for all of the possible haploid gametes 6) RY, Ry₁rY, ry a. Rr R, r b. RrYy Ru c. rrYy d. RrYY e. RrYyBb 2. Use the Punnett square to determine all of the offspring genotypes (and their relative frequencies) from the following crosses: a. Rr x Rr b. Rr x rr c. RR x Rr 3. In the problem above, the "R" allele is a dominant allele specifying for round seeds (in peas), while the "r" allele is the recessive allele specifying for wrinkled seeds. Give the expected frequencies (as percentages or ratios) for the phenotypes of the offspring resulting from each of the crosses above. 4. A brown mink crossed with a silverblue mink produced all brown offspring. When

1. For each of the diploid genotypes presented below, determine the genetic make up for all of the possible haploid gametes 6) RY, Ry₁rY, ry a. Rr R, r b. RrYy Ru c. rrYy d. RrYY e. RrYyBb 2. Use the Punnett square to determine all of the offspring genotypes (and their relative frequencies) from the following crosses: a. Rr x Rr b. Rr x rr c. RR x Rr 3. In the problem above, the "R" allele is a dominant allele specifying for round seeds (in peas), while the "r" allele is the recessive allele specifying for wrinkled seeds. Give the expected frequencies (as percentages or ratios) for the phenotypes of the offspring resulting from each of the crosses above. 4. A brown mink crossed with a silverblue mink produced all brown offspring. When

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

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 1TYK: The dominant C allele of a gene that controls color in corn produces kernels with color; plants...

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The dominant C allele of a gene that controls color in corn produces kernels with color; plants homozygous for a recessive c allele of this gene have colorless or white kernels. What kinds of gametes, and in what proportions, would be produced by the plants in the following crosses? What seed color, and in what proportions, would be expected in the offspring of the crosses? a. CCCc b. Cccc c. CcCc
A heterozygous individual has a _______ for a trait being studied. a. pair of identical alleles b. pair of nonidentical alleles c. haploid condition, in genetic terms
Two pairs of traits are segregating in a cross. Two parents produce 156 progeny that fall into 4 phenotypes. The numbers of offspring in the 4 phenotypes are 89, 31, 28, and 8. What are the genotypes of the two parents?
A testcross is a way to determine ________. a. phenotype b. genotype c. dominance
Refer to problem 2. Assume a third gene has alleles C and c. For each genotype listed, what allele combinations will occur in gametes, assuming independent assortment? a. AABBCC b. AaBBcc c. AaBBCc d. AaBbCc
Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele? c. If a female is heterozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele?
Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment? 0 0.25 0.50 0.75
1) By decomposing the cross, MmNn X Mmnn, into single gene outcomes, the possibility of obtaining a double recessive outcome for the ‘N’ gene is: a) 50%! b) 100! c) 0%! d) 25%! 2) A 16-square Punnett is time-consuming to draw out. Dr. Thompson can easily solve this problem by decomposing her dihybrid crosses into separate monohybrid Punnett squares, which would also be quicker than using a forked line diagram. If so, how many individual monohybrid Punnett squares will she need to draw? a) Four Punnett squares. b) Two Punnet squares. c) One Punnett square. d) Sixteen Punnett squares since there are 16 possible outcomes.
3) A. How are the following proteins involved in cell division: condensing, cohesin, kinetochore complex, tubulin? B. Why does phenotype not always reveal genotype? C. How can Mendel's postulates of segregation and independent assortment be explained by meiosis? D. Explain the genotypic and phenotypic ratios predicted when performing a monohybrid and a dihybrid cross of heterozygotes? E. How can you use the product rule and sum rule to calculate the probability of a particular genotype resulting from crossing parents of specific genotypes?
1. A woman who is heterozygous for the brown eye and blue eye alleles marries a man with blue eyes. What are the genotypes and phenotypes of the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
1. Most of the individuals of a certain wildflower population have white flowers, although a few are purple-flowered. Crosses have demonstrated that allele for white color flower (W) is dominant over the allele for purple (w). a. Give the genotype of a purple-flowered plant, and show the gametes that it would produce as a result of meiosis. b. If two heterozygous whoite-flowered plants are crossed. What fraction of the offspring do you expect to be purple? c. If two purple-flowered plants are crossed, what fraction of their offspring do you expect to be white? 2. In one study, Gregor Mendel crossed yellow-seeded, tall garden pea with a green-seeded, short garden pea. The F1 offspring were all yellow-seeded and tall. Assuming independent assortment of these two genes, what phenotypes and proportions did he fin among F2 offspring when the F1 garden peas are allowed to fertilize themselves? 3. Thorn apples produce either purple (P) or white (p) flowers, and their fruits are either…
1. The following are the offspring produced by the cross of AaBBCc X AaBbCC, except: a.AabbCc b.AaBbCC c.AABBCC d.AaBBCc 2. How many genotypes will be expected in the offspring of dihybrid parents? a.4 b.16 c.2 d.8