Concept explainers
What genotypes, and in what frequencies, will be present in the offspring from the following matings?
a.
b.
c.
d.
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Biology: The Dynamic Science (MindTap Course List)
- Please answer a and b and explain how you came up with the ratio?arrow_forwardA gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles? Choose 1 answer: A. Genetic recombination B. Codominance C. Incomplete dominance D.Chimerismarrow_forwardWhich type of breeding is depicted in the picture below? SEE PHOTO ATTACHED A. Crossbreeding B. Inbreeding C. Line breeding D. Backcrossarrow_forward
- Which of the following crosses will yield only recessive offsprings? show your solution using punnet square. a. WwXx x wwxx b. WWXx x WWXx c. WWXX x wwxx d. wwxx x wwxxarrow_forwardEach letter below represents an allele. Which of the following is an example of a dihybrid cross? a. R × R c. Rr Yy × Rr Yy b. Rr × Rr d. RR yy × rr YYarrow_forwardUnder what situation would you expect haplotype frequencies to remain unchanged from one generation to the next? a. crossing over between two loci is extremely rare b. the two loci are in linkage disequilibrium c. the recombination rate is greater than zero d. the coefficient of LD is either 0.25 or -0.25arrow_forward
- A true breeding plant that produces yellow seeds is crossed with a true breeding plant that produces green seeds. All of the seeds of the offspring are yellow. Why? A. All of the offspring are homozygous for the yellow allele B. The alleles are codominant C. The yellow allele is dominant to the green allele D. The yellow allele is recessive to the green allele E. Yellow is an easier color to producearrow_forwardA cross is made between a heterozygote, +++/abc, and a recessive homozygote, abc/abc. Analysis of the progeny gave the following results: 450 10 a + c 70 + b c 210 + b + 65 a + + 200 abc 460 ab+ 15 What is the map distance between the b and c genes? O9.12 map units O 10.81 map units O 12.14 map units O 13.95 map units ONone of the above PrtScn Home End %23 %24 & 7. 3. 4. 7 W R Y H. K C V この #:arrow_forwardYou cross organisms with genotypes AaBb to one another (i.e. AaBb X AaBb). What are the genotypes of gametes that these individuals can produce? Group of answer choices A. AB, ab B. AB, Ab, aB, ab C. AA, Aa, aa, BB, Bb, bb D. AaBb, AABB, aabbarrow_forward
- In a certain species of plant loci A, B and C have an additive effect on the colour of the flower. Alleles A, B, and C are dominant and alleles a, b and c are recessive. Knowing that a plant with genotype AAbbCc has a pink flower, which genotype, among the ones listed below, will produce the same phenotype? a. AABBCc b. AaBbCc c. Aabbcc d. aabbccarrow_forwardIs the first one AB or ab and the second one 30 cM?arrow_forwardA purebred plant that produces yellow seeds (YY) is crossed with a purebred plant that produces green seeds (yy). The seeds of all of the offspring are yellow. Why? A. The yellow allele is recessive to the green allele. B. All of the offspring are homozygous yellow. C. The alleles are codominant. D. The yellow allele is (completely) dominant to the green allele.arrow_forward