Cross Breeding And F1 Hybrids In Animals Flashcards
How can new alleles be introduced?
New alleles can be introduced to plant and animal lines by crossing a cultivar or breed with an individual with a different, desired genotype.
What can individuals from different breeds produce?
Produce a new crossbreed population with improved characteristics.
Why are the two parent breeds maintained?
Can be maintained to produce more crossbred animals showing the improved characteristic.
In plants, F1 hybrids…
Produced by the crossing of two different inbred lines, create a relatively uniform heterozygous crop.
F1 hybrids often have…
Increased vigour and yield
What can plants with increased vigour have?
Plants with increased vigour may have increased disease resistance or increased growth rate.
In inbreeding…
Animals and plants, F1 hybrids are not usually bred together as the F2 produced shows too much variation.
