Chuco Bueno y Claro Valdes El rey de la historia
Exam I Genetics PCB3063 Form 1 Fall 2013
1. Gregor Mendel selected traits which could be easily and unambiguously sorted into two classes. Each trait such as seed shape was first bred into true breeding lines or
Parental Cross
F1 Phenotype
F2 Phenotypic Ratio
F2 Ratio
Round x Wrinkled Seed
Round
5474 Round:1850 Wrinkled
2.96:1
Yellow x Green Seeds
Yellow
6022 Yellow:2001 Green
3.01:1
Red x White Flowers
Red
705 Red:224 White
3.15:1
Tall x Dwarf Plants
Tall
l787 Tall:227 Dwarf
2.84:1
varieties; these were crossed to produce the first filial or F1 generation. The F1s were, then, intercrossed to produce the data in this table. Mendel’s results were very different from the predicted results under the common theory of inheritance in the nineteenth century. For example the F1 of a cross between red flowers and white flowers should have been _____. a. red b. white c. pink d. variegated red and white e. yellow
2. Darwin realized that his theory of natural selection would not work unless the genetic material was particulate. If the “stuff” of inheritance was fluid matings between individuals of different phenotypes would be a blend of the parental types and variation would be lost from the population. Natural selection will not work under the blending theory of inheritance, because there would be a. only two alleles. b. no crossing over. c. incomplete penetrance. d. insufficient variation. e. astronomical mutation rates.
3. The western honey bee or European honey bee (Apis mellifera) is a species of honey bee. The genus Apis is Latin for "bee", and mellifera comes from Latin melli- "honey" and ferre "to bear"—hence the scientific name means "honey-bearing bee". The somatic cells of haploid males contain 16 chromosomes; the
1. Gregor Mendel selected traits which could be easily and unambiguously sorted into two classes. Each trait such as seed shape was first bred into true breeding lines or
Parental Cross
F1 Phenotype
F2 Phenotypic Ratio
F2 Ratio
Round x Wrinkled Seed
Round
5474 Round:1850 Wrinkled
2.96:1
Yellow x Green Seeds
Yellow
6022 Yellow:2001 Green
3.01:1
Red x White Flowers
Red
705 Red:224 White
3.15:1
Tall x Dwarf Plants
Tall
l787 Tall:227 Dwarf
2.84:1
varieties; these were crossed to produce the first filial or F1 generation. The F1s were, then, intercrossed to produce the data in this table. Mendel’s results were very different from the predicted results under the common theory of inheritance in the nineteenth century. For example the F1 of a cross between red flowers and white flowers should have been _____. a. red b. white c. pink d. variegated red and white e. yellow
2. Darwin realized that his theory of natural selection would not work unless the genetic material was particulate. If the “stuff” of inheritance was fluid matings between individuals of different phenotypes would be a blend of the parental types and variation would be lost from the population. Natural selection will not work under the blending theory of inheritance, because there would be a. only two alleles. b. no crossing over. c. incomplete penetrance. d. insufficient variation. e. astronomical mutation rates.
3. The western honey bee or European honey bee (Apis mellifera) is a species of honey bee. The genus Apis is Latin for "bee", and mellifera comes from Latin melli- "honey" and ferre "to bear"—hence the scientific name means "honey-bearing bee". The somatic cells of haploid males contain 16 chromosomes; the