What are the possible genotypes of the offspring?
Predicting the genotype of offspring
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele.
What are the possible genetic variations of offspring in this cross?
The possible genetic variations of offspring in this cross would be BB and Bb, which will be produced in the ratio in the ratio 1:1. The genotype of parents in the cross are- Bb and BB. This indicates that only two genetic variations are produced in the offspring of this cross, which are BB and Bb (in the ratio 1:1).
What are the possible genotypes of the offspring from a Monohybrid test cross?
For the F2 generation of a monohybrid cross, the following three possible combinations of genotypes result: homozygous dominant, heterozygous, or homozygous recessive.
What are the genotype of parents and offspring in this cross?
Figure 6: Each parent contributes one allele to each of its offspring. Thus, in this cross, all offspring will have the Bb genotype.
What traits are genetic?
Most traits are determined by more than one gene. For example, skin color and height are determined by many genes. Some phenotypes however, are determined by a single gene.
- Interlocking fingers. Interlock fingers. …
- Ear lobes. …
- Widow’s peak. …
- Tongue curling. …
- Hitch hiker’s thumb. …
- Pigmented iris. …
- PTC tasting.
Is the passing of traits from parents to offspring?
The transmission of characteristics from parents to offspring is called heredity, and the characteristics that are inherited can be predicted.
What does a 3 1 ratio mean in genetics?
The F2 generation always produced a 3:1 ratio where the dominant trait is present three times as often as the recessive trait. Mendel coined two terms to describe the relationship of the two phenotypes based on the F1 and F2 phenotypes.
What can you say about the phenotype of the offspring?
Answer: The phenotype is the trait those genes express. … Looking at the possible offspring, each box (or possible offspring) has two copies of the dominant gene. This means there is a 100% chance of the offspring having brown eyes, or being BB.
Which allele is always written first?
The alleles are represented by letters. The letter chosen is usually the first letter of the trait.
What is the percentage of an offspring?
Divide the number of boxes with a dominant allele by four and multiply the result by 100 to get the percent chance that an offspring will have the dominant trait. For example (2/4)*100 = 50, so there is a 50 percent chance of an offspring having brown eyes.
What is phenotype example?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.