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RrYy
You can perform test crosses with individuals of known genotypes and analyse the offspring you get.
With a dihybrid cross, there are 9 possible genotypes and 4 possible phenotypes. The ratio of phenotypes expected is 9 LR : 3 Lr : 3 lR : 1 lr. The probability of a homozygous dominant for both traits is 1/16 or 6%. The probability of having a dominant phenotype for both traits is 9/16 or 56%. 9/16 is roughly equal to 3/5 - so this is the expected ratio.
In this case, it doesn't matter what the genotype of the other parent is since BB is homozygous dominant (assuming this is the only gene that affects coat colour of course). All of the BB parent's offspring will PHENOTYPICALLY be brown-coated. They may be heterozygous though (Bb) depending on genotype of the second parent. So the PHENOTYPIC probability of a brown coat is 100% The genotypic probability of a homozygous genotype depends on the second parent.
In genetics a type of grid is used to show the gametes of each parent and their possible offspring and also called the checkerboard is used. The Punnet Square is named after Reginald Crundall Punnett an English geneticist.
What is the probability that any of the offspring between individuals with the genotype AABbCcddEE will have the genotype AABBCCddEE
A Punnet square is a way of representing the possible combinations of genotypes in an offspring of two parents with differing genes. It is used to determine the probability that the offspring has a particular genotype.
RrYy
The parents can pass on only the alleles of their genotypes to their offspring. Therefore, the offspring genotypes and phenotypes are dependent solely upon the alleles inherited from the parents.
That depends entirely on the genotypes of the parents.
Probability is the term for the chance that any specific genotype will occur in the offspring from the mating of parents. Typically the capital letter A (in this example) represents the dominant allele as opposed to the recessive allele. The probability of the possible genotypes in a monohybrid cross is 1AA:2Aa:1aa. The probability of AA is .25 or 25%.
It depends on the parents' genes. If both parent have a Pp genotype, then the offspring has a 25% chance of having a PP genotype. But if both parents have a PP genotype then its 100%.
half white and half purple
You could cross breed them and depending on what their offspring is, you can determine what their genotype is.
You can perform test crosses with individuals of known genotypes and analyse the offspring you get.
Genotype is used to determine the probability of having specific offspring from two known parents.
The possible genotypes and phenotypes of the offspring can be determined using a Punnett square, a grid that shows the possible combinations of alleles that can result at fertilisation. The Punnett square below shows the expected genotypes of the offspring of parent pea plants that both have the genotype Rr.