Wiki User
∙ 12y agoDihybrid cross
Wiki User
∙ 12y agoA monohybrid cross is a cross between two individuals that are homozygous for different alleles of the same gene. An example is a cross between a red-eyed (RR) fruit fly and a white-eyed (WW) fruitfly.
heterozygous
In a dihybrid cross between two heterozygous individuals, there are 16 phenotypically different types of offspring possible. This is because there are 2^4 = 16 possible combinations of alleles that can be inherited from the parental generation.
A Punnett square is a grid diagram used to predict the possible genetic outcomes of a cross between two individuals. It shows the different combinations of alleles that offspring may inherit from their parents.
A monohybrid cross involves just one gene. A dihybrid cross involves two. In a monohybrid cross, there are four possible allele combinations (although depending on the alleles of the parents there may only be one or two possibilities).
Alternative forms of a gene are called alleles. Alleles are different versions of a gene that can result in variations in traits or characteristics. In diploid organisms, individuals inherit two alleles for each gene, one from each parent.
A Punnett square is a genetics tool that uses letters to represent dominant and recessive alleles. This tool is used to predict the possible outcomes of a genetic cross between two individuals.
Most of the members of a breed are genetically similar. This increases the chance that a cross between two individuals will bring together two recessive alleles for a genetic defect.
Cross-sectional design involves studying different groups of individuals at a single point in time, whereas cross-sequential design combines both cross-sectional and longitudinal elements by studying different age groups over a period of time. Cross-sectional design allows for quick and easy comparisons between different age groups, while cross-sequential design allows researchers to track the same individuals as they age.
The first filial generation (F1) is the result of a cross between two parent organisms. This generation represents the offspring that result from the mating of the two parents. It is the first generation of hybrid offspring in a genetic cross.
A Punnett square is a visual tool used in genetics to predict the possible outcomes of a genetic cross between two individuals. It demonstrates all the potential combinations of alleles that can be inherited from both parents.
A Punnett square for a monohybrid cross predicts the results of crossing two different alleles for the same gene, typically one dominant and one recessive allele. This type of cross allows for the determination of the possible genotypes and phenotypes of offspring.