What is triploid banana?
For example, the common banana is triploid. In other words, it has three sets of chromosomes. Instead of having one set of chromosomes from each parent, it has two sets from one parent and one set from the other parent. Bananas, too, are parthenocarpic and produce fruit in the absence of successful fertilization.
What chromosomes do bananas have?
Cultivated and wild bananas have x = 11 as basic chromosome number (Cheesman and Larter, 1935).
Where do the chimera molecules propagate?
Where do the chimera molecules propagate? Explanation: Chimera or recombinant molecules needs a host for replication and propagation. Thus host selection is very essential for the propagation of a certain recombinant molecule. 2.
How many sets of DNA do bananas have?
(Triploid bananas have three sets of chromosomes and hence cannot pair up into even numbered groups – that makes them sterile, and most sterile plants produce no seeds.
Which is the best definition of a chimera?
What is a chimera? A chimera is an individual whose body is composed of cells that are genetically distinct, as if they are from different individuals – and sometimes they really are from different individuals. Many people’s bodies contain at least a few living cells from another person.
How are chimeras produced in plants and animals?
Chimera (genetics) Animal chimeras are produced by the merger of multiple fertilized eggs. In plant chimeras, however, the distinct types of tissue may originate from the same zygote, and the difference is often due to mutation during ordinary cell division. Normally, genetic chimerism is not visible on casual inspection; however,…
How are two eggs produced in a dispermic Chimera?
In dispermic chimeras, two eggs that have been fertilized by two sperm fuse together, producing a so-called tetragametic individual—an individual originating from four gametes, or sex cells. (Under normal circumstances, in the absence of zygote fusion, two fertilized eggs result in the production of dizygotic, or fraternal, twins.)
How does a chimera get into a child?
The number of these cells is tiny, though, so this phenomenon is known as microchimerism. Cells from the mother – and maybe even from previously born siblings – can get into the bodies of children too. Chimerism can also occur as a result of organ transplants.