Question

If the gametes from a diploid individual only contain one of the two possible alleles, it is not difficult to determine the genotypes of the gametes from that individual. For the diploid genotypes indicated below, write all of the possible genotypes of the gametes. If more than one type of gamete is possible, separate them with a comma. Diploid Genotype Genotype of Gametes RR rr Rr

Answer 1

Diploid Genotype - Genotype of Gametes

RR - R

rr - r

Rr - R, r

Step-by-step explanation:

According to Gregor Mendel in his law of Segregation, he stated that the alleles of a gene gets separated into gametes during gamete formation (meiosis). This occurs in such a way that only one allele of the two possible alleles that make up the genotype of a diploid organism is found in the gamete.

Meiosis is a cell division that reduces the chromosomal number of the daughter cells. Hence, a diploid organism (2n) will undergo meiosis to produce haploid (n) daughter cells (gametes). An organism with a diploid genotype RR will produce gametes which have only genotype R. The same applies to organism with genotype rr. Only gametes with genotype, r, will be produced.

However, in a heterozygous genotype like Rr, the different alleles will separate into gametes in an equal proportion i.e. gametes with genotypes R and r will be produced in a ratio 1:1.