1.Two emerald eyed elfs have emeral-, ruby-, silver- andgold-eyed offspring in ratios 9:3:3:1 Suggest a possible mechanismfor this kind of ingeritance. Give the scheme of the cross.Explain
2. Crossing of two punk panthers results in a ration 9:4:3 ofpink, white and red panther cubs. Give a possible scheme of thecross and genotypes of the parents and their offspring. Explain
3. A couple of Achondroplastic dwarfs (a mutation lethal inhomozygous dominant condition) with blood groups A and B has anormal size son with blood group O. What is the chance that theirnext child will be a dwarf with blood group A? The genes areindependently assorting.
4. In dogs, white color is due to the pigment inhibitin allele l(this means that genotypes Ii and II produce white dogs but ii dogsare colored). Color, in colored dogs (black or brown) is determinedby a gene B>b (black is dominant over brown). Both genes areindependently assorting. What is the ratio of phenotypes in theoffspring of:
a) two sibling brown dogs whose parents were white?
b)two sibling dogs (one black and one brown) whose father wasbrown? Show all three generations and schemes of crosses
1.Two emerald eyed elfs have emeral-, ruby-, silver- andgold-eyed offspring in ratios 9:3:3:1 Suggest a possible mechanismfor this kind of ingeritance. Give the scheme of the cross.Explain
2. Crossing of two punk panthers results in a ration 9:4:3 ofpink, white and red panther cubs. Give a possible scheme of thecross and genotypes of the parents and their offspring. Explain
3. A couple of Achondroplastic dwarfs (a mutation lethal inhomozygous dominant condition) with blood groups A and B has anormal size son with blood group O. What is the chance that theirnext child will be a dwarf with blood group A? The genes areindependently assorting.
4. In dogs, white color is due to the pigment inhibitin allele l(this means that genotypes Ii and II produce white dogs but ii dogsare colored). Color, in colored dogs (black or brown) is determinedby a gene B>b (black is dominant over brown). Both genes areindependently assorting. What is the ratio of phenotypes in theoffspring of:
a) two sibling brown dogs whose parents were white?
b)two sibling dogs (one black and one brown) whose father wasbrown? Show all three generations and schemes of crosses
