What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly...
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Transcript of What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly...
![Page 1: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/1.jpg)
![Page 2: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/2.jpg)
What is Hybrid?
These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant or recessive trait.
![Page 3: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/3.jpg)
Types of Hybrids
1) SINGLE-CROSS HYBRIDS -They result from the cross between
two purebred organisms. -The cross between two
different homozygous lines produces a first offspring hybrid that is homozygous.
-They have two alleles, one contributed by each parent and typically one is dominant and the other recessive.
![Page 4: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/4.jpg)
2) DOUBLE CROSS HYBRIDS-They result from the cross between two different hybrids.
3) THREE-WAY CROSS HYBRIDS- They result from the cross between one parent that is a hybrid and the other is from an purebred line.
4) TRIPLE CROSS HYBRIDS- They result from the crossing of two different three-way cross hybrids.
5) POPULATION HYBRIDS- They result from the crossing of plants or animals in a population with another population. These include crosses between different races.
![Page 5: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/5.jpg)
Examples of Hybridsa) MULE (a cross of a female horse and a male
donkey); reciprocal hybrid
b) HINNY (a cross between a female donkey and a male horse); reciprocal hybrid
c) ZEEDONK or ZONKEY (a zebra/donkey cross); A zebroid
d) ZONY or ZETLAND(a zebra/pony cross); Zony is the generic term while Zetland is specifically a hybrid of the Shetland pony breed with a zebra; Also a zebroid
![Page 6: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/6.jpg)
Example of a hybrid using punnett squares…
![Page 7: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/7.jpg)
A number of conditions exist that limit the success of hybridization:
1) Great genetic diversity between most species.
2) Morphological differences 3) Differing times of fertility4) Mating behaviors and cues5) Physiological rejection of sperm
cells or the developing embryoIn plants:
6) Blooming period differences7) Different pollinator vectors8) Inhibition of pollen tube growth
Limiting Factors
![Page 8: What is Hybrid? These are animals of any offspring resulting from the mating of two distinctly homozygous or purebred individuals. Also has one dominant.](https://reader036.fdocuments.us/reader036/viewer/2022082817/56649db95503460f94aa9edb/html5/thumbnails/8.jpg)
Referenceshttp://www.eastbaymom.com/files/punnett_square.jpghttp://en.wikipedia.org/wiki/Hybrid_(biology)
Thank you!