Lethal genes in rabbit - pelger anomaly

Pelger anomaly in rabbits involves white blood cell nuclear segmentation. Rabbits homozygous [PP] to this condition are usually still born or die just after birth due to gross illformed skeletal structure. Pelgers are heterozygous [Pp] and normal rabbits are homozygous [pp]. What is the adult F2 phenotypic ratio in all pelger matings?

Lethal genes - Thalassemia in humans, a hereditary blood disease

Thalassemia is a hemoglobin defect in humans occurring in 2 forms. Thalassemia minor is a condition in which erythrocytes are small [microcytic] and in increased numbers [polycythemic]. The health of the individual is essentially normal. Thalassemia major is characterized by severe anemia, enlargement of spleen, microcytes and polycythemia among other symptoms early in life. The individual dies before reproductive age. Thalassemia major is found as homozygotes [TmTm], Thalassemia minor as heterozygotes [TmTn] and normal individuals as homozygotes [TnTn]. Since all T. major individuals die before sexual maturity. a) What proportion of adult F1 from marriages between T. minor and normal wo... click for more

Codominant alleles in coat color of guinea pigs

In guinea pigs yellow coat color is produced by homozygous genotype YY, cream color by heterozygous genotype YW and white by homozygous WW. What would be the genotypic and phenotypic ratio of the progeny of matings between two cream colored pigs?

Codominance in coat colors of palomino horses

D1 and D2 are a pair of codominant alleles involved in the inheritance of coat colors in horses. Genotypes homozygous for D1 produces chestnut [reddish], heterozygous genotypes palomino [golden color with lighter shade of mane and tail] and homozygous for D2 cremello [almost white]. a) Determine the probable palomino: non-palomino ratio amongst the offsprings of palomino only matings. b) what percentage of the non-palominos can be expected to breed true? c) what types of matings would produce only palominos?

genetics

In the court,people are asked to only tell the truth, what are the problems in this statement and what is better way to say it?