Pigeons may exhibit a checkered or plain color patterns. In a series of controlled mating the following data were obtained  F1 x F1 crosses  Checkered x plain. 34 checkered 0plain  Checkered x plain. 17 checkered 14 plain  Checkered x checkered 28 checkered 9 plain  Checkered x checkered 39 checkered 0plain    How are the checkered and plain patterns inherited ? Select and assigned symbols for the genes involved and determine the genotypes of the parents and offspring in each cross.

Black coat Brown coat A heterozygous dog with a black coat (C¹C2) is crossed with a heterozygous dog with a yellow coat (C³C2). Determine the phenotypic ratio of offspring produced Yellow coat In a particular breed of dog, the following genotypes and their respective phenotypes are known: Record your 3 digits answer accordingly: • C'C- black coat • C'C²= black coat • C²C²-brown coat • C'C'=yellow coat • C'C²=yellow coat • C'C'=yellow coat

The image shows a pair of homologous chromosomes from a single parent before gamete production. M1 and M2 are maternal chromosomes, while P1 and P2 are paternal chromosomes. Two traits are shown: D represents seed color (D – green, d – yellow), while F represents flower color (F – purple, f – white). These two traits follow the patterns of basic Mendelian genetics. During crossing-over between the M2 F allele and the P1 f allele, a mutation occurred and the portion of P1 did not reattach to the chromosome. Which of the following explains what would happen to the proportion of white flowers in a population resulting from this mutation? A - There would be an increase in the proportion of white flowers because the f allele is distributed to more gametes. B - There would be a decrease in the proportion of white flowers because the f allele is not distributed to as many gametes. C - There would be an increase in the proportion of white flowers because the f allele would not be masked by the…

A 3-point test cross produces the following numbers of offspring: The yellow cells are the recombinant + + a 348 offspring that result from a single cross-over between A & G. What is the distance g x + 363 between those two genes? + X + 88 O 18.8 mu g + a 96 O 89.5 mu g + 61 O cannot be determined from the information given + X a 40 89.9 mu g x a 1 O 18.4 mu + + + 3.