BIOL 100 Phenotypes And Genotypes Discussion
Activity A: Genotypes and Phenotypes
A gene R codes for the tongue-rolling ability in humans. The allele R, which gives a person this ability, is dominant over r.
What is the phenotype of an individual whose genotype is RR?
What is the phenotype of an individual whose genotype is Rr?
What is the phenotype of an individual whose genotype is rr?
- What are your phenotype and genotype?
If a person’s genotype is RR, what are the genotypes of the resulting gametes?
If the person’s genotype is rr, what are the genotypes of the resulting gametes?
- If the person’s genotype is Rr, what are the genotypes of the resulting gametes?
After meiosis, each resultant gamete will have only one member of each homologous pair of chromosomes. Therefore, each gamete will have only one allele for tongue-rolling
The distribution of alleles during the formation of gametes was one of the principles described by Gregor Mendel it is called the principle of segregation. The two alleles of a gene segregate, or separate, from each other so that each one ends up in a different gamete. Mendel, however, did not know about the existence of chromosomes or meiosis. Not until decades after his death was the chromosomal basis of Mendel’s law discovered
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