In humans, the sex chromosomes determines the sex of an individual. Female has the same sex chromosomes XX and male has both X and Y chromosomes. When these two set of chromosomes fused together (by means of fertilization) an offspring will be formed. In the illustration, the fusion of XX x XY resulted to 2 possible offsprings, XX and XY.
Guide questions:
1. What are the phenotypes of the offspring?
- Phenotype refers to the physical trait obtained by the offspring, in this case the phenotype are determined by the sex trait which is the female and male offsprings.
2. What are the genotypes of the offspring?
- Genotypes refers to a gene type of the organisms which are often represented by a letter or knon as allelles. The genotype for this problem would be the XX and XY chromosomes.
3. How many percent of the offspring is male?
- Again the sex chromosomes for male is the XY, the percentage of occurence of male will be 50% since 2 offsprings bear the sex trait XY.
4. How many percent of the offspring is female?
- Female = XX, the percentage of the female offspring is also 50%
