10 Questions
What are the three concepts for choosing parents in hybridological breeding programs?
Variety, character, and gene
Which type of hybridization involves crossing two parents with simple genetic constitutions?
Simple hybridization
What is the purpose of backcrossing in breeding programs?
To incorporate a desired character into a recurrent parent without modifying its gene pool.
Which type of hybridization is used to transfer positive characters into valuable varieties?
Convergent hybridization
What is the difference between general combining ability (GCC) and specific combining capacity (SCC)?
GCC represents the average value of a parent estimated based on its performance when crossed with another parent, while SCC highlights the behavior of a parent when crossed with another parent.
Which type of hybridization involves using a third parent and crossing it with the F1 generation?
Triple hybridization
What is the full backcross method used for?
When the donor is a negative genotype in all cockatoos, except for one positive character.
What is the success of using hybrids dependent on?
The choice of parental forms.
What is the purpose of cyclic hybridizations?
To determine if a line is a good or poor combinator.
What is the purpose of complex successive hybridization?
To incorporate desired traits from four or more parents.
Study Notes
- Hybridological programs can use genetically close or distant parents.
- The choice of parental forms is crucial for the success of breeding programs.
- Three concepts for choosing parents are variety, character, and gene.
- The success of using hybrids depends on the choice of parental forms.
- Major genes are preferred in breeding programs based on hybridological processes.
- Combinative capacity involves the possibilities of a parent to produce superior offspring when crossed with another parent.
- Good combinative capacity cannot be predicted based only on the knowledge of parental characters.
- General combining ability (GCC) represents the average value of a parent estimated based on its performance when crossed with another parent.
- Specific combining capacity (SCC) highlights the behavior of a parent when crossed with another parent.
- Diallel hybridization can be used to determine if a line is a good or poor combinator.
- Diallel hybridization is used to analyze the genetics of quantitative traits.
- Cyclic hybridizations are used for CCG determination, followed by dialal hybridizations for CCS determination.
- Simple hybridization involves crossing two parents with simple genetic constitutions.
- Reciprocal hybridization involves using a paternal parent as a maternal partner in another cross.
- Triple hybridization involves using a third parent and crossing it with the F1 generation.
- Complex successive hybridization involves using four or more parents to incorporate desired traits.
- Double hybridization involves crossing two F1 hybrids, each with two parents contributing equally.
- Convergent hybridization methods are used to transfer positive characters into valuable varieties.
- Backcrossing involves crossing a generation several times with one of the parents.
- The choice of parents for hybridization is important and can impact the frequency of desired genes in the offspring.
- Backcross aims to incorporate a desired character into a recurrent parent without modifying its gene pool.
- It is achieved through a series of backcrosses of the offspring with the recurring parent.
- After six series of backcrosses and selections, the progeny will have 98.4% of the gene pool of the recurrent parent and the desired character from the donor.
- Full backcross method is used when the donor is a negative genotype in all cockatoos, except for one positive character.
- Incomplete backcross method is recommended when a donor possesses a number of positive characters.
- Convergent hybridizations are used to introduce several characters from different donors into a genome.
- Breeding success is not correlated with the complexity of hybridizations.
- Careful selection of parents with numerous positive characters can increase breeding success.
- Backcrossing can result in genetically different lines.
- Recurrent parent's gene pool is restored after six or more backcrosses.
Are you interested in the science of hybridization and breeding programs? Test your knowledge with our quiz on hybridological processes. From choosing parental forms to the different types of hybridization methods, this quiz covers it all. Use your understanding of keywords like combinative capacity, general combining ability, and specific combining capacity to answer questions on diallel hybridization and backcrossing. Sharpen your expertise in genetics and quantitative traits while discovering new concepts in hybridization. Take our quiz and see how much you
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