Planetagarden
- What is a polyploid fruit?
- Why are strawberries polyploid?
- Why are triploid fruits seedless?
- Why are bananas triploid?
- What fruits are Octoploids?
- Are humans polyploidy?
- Why is it easy to extract DNA from strawberries?
- How much DNA do we share with a strawberry?
- What does extra DNA do for strawberries?
- Why seedless fruit is bad?
- Is banana a seedless fruit?
- Is coconut a seedless fruit?
- Are bananas genetically modified?
- Are bananas man made?
- Which fruit has no seed and no skin?
- Why do bananas have more DNA than strawberries?
- What ploidy are strawberries?
- What organism has the most chromosomes?
- Is polyploidy fatal in humans?
- Is polyploidy good or bad?
- Why are triploids sterile?
What is a polyploid fruit?
Simple. Fruits like bananas and pineapples are called seedless polyploid fruit. That is because banana and pineapple flowers, when pollinated, form sterile seeds. (These are the tiny black specks found in the middle of bananas.) Since humans grow both these fruits vegetatively, having sterile seeds is not an issue.
Why are strawberries polyploid?
Polyploidy, a condition more common in plants, occurs when multiple pairs of chromosomes are present in the genetic component of an organism. ... The various major species of strawberries are listed, along with their genetic makeup and informational notes. For more information, see the Strawberry Varieties page.
Why are triploid fruits seedless?
Seedless banana and watermelon fruits are produced on triploid plants, whose three sets of chromosomes make it very unlikely for meiosis to successfully produce spores and gametophytes. ... In such cases, the resulting plants are genetically identical clones.
Why are bananas triploid?
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 fruits are Octoploids?
Polyploidy can occur naturally, where wild species “add together” their DNA. Two good examples of this are wheat and strawberries. Wheat is a hexaploid, which means it has six sets of chromosomes, and strawberries are octoploids – you guessed it – eight sets!
Are humans polyploidy?
Humans. True polyploidy rarely occurs in humans, although polyploid cells occur in highly differentiated tissue, such as liver parenchyma, heart muscle, placenta and in bone marrow. ... In some cases, survival past birth may be extended if there is mixoploidy with both a diploid and a triploid cell population present.
Why is it easy to extract DNA from strawberries?
Ripe strawberries are an excellent source for extracting DNA because they are easy to pulverize and contain enzymes called pectinases and cellulases that help to break down cell walls. And most important, strawberries have eight copies of each chromosome (they are octoploid), so there is a lot of DNA to isolate.
How much DNA do we share with a strawberry?
Each little piece of a living thing, known as a cell, has DNA in it. In humans each of these cells have 2 copies of the DNA, but in strawberries each of these have 8 copies of the DNA (scientists call this octoploid). That means strawberries have 4 times as many copies of DNA as humans, making it 4 times easier to see!
What does extra DNA do for strawberries?
Each individual cell in an organism has a copy of the DNA pattern used to reproduce that cell. Usually, the DNA is combined within the cell, so you can't see it. But when you create a mixture of dish soap and salt and mix it with the strawberry pulp, it helps break down the strawberry cells into individual parts.
Why seedless fruit is bad?
Sometimes fruits produced through parthenocarpy can be misshapen, smaller and duller in appearance, according to a study published in the journal Plant Physiology in 2007. ... They also point out that transfer of genes from seedless crops may cause unmodified plants to become sterile or fail to produce seeds.
Is banana a seedless fruit?
Bananas and grapes are the most commonly available seedless fruits. Bananas are seedless because the parent banana tree is triploid (3X chromosome sets) even though pollination is normal. ... Seedless fruit is produced on the resulting triploid (3X) hybrids.
Is coconut a seedless fruit?
Quite interestingly, a coconut is all of these: a seed, a fruit and a nut! In strictly botanical terms, a coconut is a fibrous one-seeded dry drupe. Finally, it is also a nut, given that a loose definition of a nut is nothing but a one-seeded 'fruit'. ...
Are bananas genetically modified?
In addition to many promising laboratory‐based studies, several genetically engineered banana cultivars have been trialled in the field. However, the deployment of genetically engineered varieties of bananas lags behind that of other major crops and there has been no commercial plantation.
Are bananas man made?
- Bananas: Believe it or not, bananas are man made. The yellow delight that goes back around 10,000 years was was apparently a blend of the wild Musa acuminata and Musa balbisiana species of banana. You can try either of them and you'll find a rather foul taste.
Which fruit has no seed and no skin?
Most tender cooked and canned vegetables or fruits without seeds, hulls and skins such as carrots, tomatoes, asparagus tips, beets, avocado, apricots, Pears (without skin), peaches, pumpkin, squash (acorn) without seeds, potato (no skin), strained fruit juice, canned applesauce, pureed plums and ripe bananas.
Why do bananas have more DNA than strawberries?
The ripe and over ripe bananas produced a smaller amount of DNA because the cells that stick the nutrition break down and begin to decompose when it begins to ripen. The outcome showed me that over ripe kiwis and strawberries produce more measurable DNA.
What ploidy are strawberries?
Ploidy levels of wild strawberry species, include diploid (2n = 2x = 14), tetraploid (2n = 4x = 28), pentaploid (2n = 5x = 35), hexaploid (2n = 6x = 42), octoploid (2n = 8x = 56), and nonaploid (2n = 9x = 63).
What organism has the most chromosomes?
The organism with the highest chromosome number recorded in to date is estimated to be 1,440 (or 720 pairs) found in the adder's tongue fern Ophioglossum reticulatum.
Is polyploidy fatal in humans?
Interestingly, polyploidy is lethal regardless of the sexual phenotype of the embryo (e.g., triploid XXX humans, which develop as females, die, as do triploid ZZZ chickens, which develop as males), and polyploidy causes much more severe defects than trisomy involving the sex chromosomes (diploids with an extra X or Y ...
Is polyploidy good or bad?
Though polyploidy is not common in animals, it is suspected that it might have played a role in the evolution, eons ago, of vertebrates, ray-finned fish, and the salmon family (of which trout are members). But on the whole, polyploidy is a dicey and often dangerous affair for animals.
Why are triploids sterile?
Triploid organisms are normally sterile as their lack of homologous chromosomes prevents pairing during meiosis. This can be useful to plant breeders, for example in banana cultivation: sterile triploid bananas can be propagated asexually and will not contain any seeds.
