How do you solve a monohybrid cross problem?
Monohybrid Cross Problem Set
- Set up a 2 by 2 Punnett square.
- Write the alleles for parent 1 on the left side of the Punnett square. Each gamete will have one of the two alleles of the parent.
- Write the alleles from parent 2 above the Punnett square.
- Fill the squares for parent 1.
What is a monohybrid in genetics?
A monohybrid cross is a breeding experiment between P generation (parental generation) organisms that differ in a single given trait. The P generation organisms are homozygous for the given trait. However, each parent possesses different alleles for that particular trait.
How do you find the genotypic ratio of a monohybrid cross?
To find the genotypic ratio, count the number of times each combination appears in the grid, starting in the upper left square. The example in Figure 1 below is crossing alleles for just one trait, flower color. Larger Punnett squares are used to calculate genotypic ratios for more than one trait as shown in Figure 2.
What is the possible genotypes for monohybrid TT * TT cross?
A monohybrid cross is a hybrid of two individuals having homozygous genotype which results in the opposite phenotype. In this TT× tt cross, the dominant trait is the one that appears in the phenotype, so all the offspring will be tall. All four offspring will have a Tt genotype.
How do you find the genotypic ratio and phenotypic ratio?
To estimate the genotypic and phenotypic ratio, calculate the number of Punnett squares with each allele combination. So, in this example, one Punnett square for both RR and rr and two Punnett square boxes for Rr. Calculating Punnett square ratios as 1:2:1 will give the genotypic ratio.
What is the genotypic ratio of F2 generation in monohybrid out cross?
The genotypic ratio in the F2 generation of a monohybrid outcross is 1 : 1. The out cross refers to the cross between F1 offspring and homozygous parent.
What is the genotype of YY and YY?
Yy is the heterozygous genotype (one dominant allele, one recessive allele). The phenotype of this genotype is yellow seed color. yy is the homozygous dominant genotype (2 y alleles)….Mendelian genetics review.