show and explain the genetics through the generations of rodents outlined above
Q1
In a species of rodent, straight hair is dominant to curly hair, and dark eyes are dominant to red eyes in normal mendelian fashion. These characteristics are not linked. A breeder of fancy rodents, has been given a gift of a female rodent from a cross between a pure breeding, curly-haired red-eyed male rodent, and pure breeding, straight-haired dark-eyed female rodent. This gifted female rodent was then allowed to cross with a pure breeding straight-haired dark-eyed male rodent.
Clearly show and explain the genetics through the generations of rodents outlined above including the potential F2 generation. (15 marks)
Q2
In a species of self fertilising plant, tall is dominant to short, and flower colour can be either red, blue, or in combination purple.
Explain the genetics associated with artificially crossing a heterozygous tall plant with red flowers, and a homozygous short plant with purple flowers, going to and including the natural F2 generation produced by just their purple flowered progeny.
(23 marks)
show and explain the genetics through the generations of rodents outlined above
Q1
In a species of rodent, straight hair is dominant to curly hair, and dark eyes are dominant to red eyes in normal mendelian fashion. These characteristics are not linked. A breeder of fancy rodents, has been given a gift of a female rodent from a cross between a pure breeding, curly-haired red-eyed male rodent, and pure breeding, straight-haired dark-eyed female rodent. This gifted female rodent was then allowed to cross with a pure breeding straight-haired dark-eyed male rodent.
Clearly show and explain the genetics through the generations of rodents outlined above including the potential F2 generation. (15 marks)
Q2
In a species of self fertilising plant, tall is dominant to short, and flower colour can be either red, blue, or in combination purple.
Explain the genetics associated with artificially crossing a heterozygous tall plant with red flowers, and a homozygous short plant with purple flowers, going to and including the natural F2 generation produced by just their purple flowered progeny.
(23 marks)