What are the sequence of steps in Mendel's cross-pollination process?
Mendel's experiments involved crossing a pure breeding tall pea plant with pure breeding dwarf pea plant. The sequence of steps in this mono-hybrid cross are explained below.
A pure breeding (homozygous) tall pea plant and a pure breeding (homozygous) dwarf pea plant were crossed in Mendel's experiments.
Let's take a pure tall pea plant and a pure dwarf pea plant, and consider one to be male and the other to be female.
Pure tall plant flowers are emasculanated, meaning that only the pistil (female) portion of the flower remains after the stamens from the young flowers are removed and covered with polythene bags to prevent uncontrollable pollination.
In order to prevent any unwanted pollen from landing on the stamens, the pure dwarf plant's male flowers are additionally covered in polythene bags.
When the anthers are mature, the stamens of the dwarf plant flowers (taken as male) are removed. The anthers are then dusted upon the stigma of the tall plant flowers (taken as female) and covered with polythene bags right away to prevent any unwanted pollen from falling on the stigma.
The seeds that are produced on pure tall plants are then sown to produce plants that make up the F1 generation.
The resulting seeds will germinate to produce the F 2 generation, and all plants produced as a result of this cross are isolated and permitted to freely interbreed among themselves.
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Mendel's cross-pollination process involves the following sequence of steps:
- Selection of pure-breeding parental plants with contrasting traits.
- Removal of stamens from one parent to prevent self-pollination.
- Collection of pollen from the other parent.
- Transfer of pollen to the stigma of the emasculated parent.
- Development of seeds on the emasculated parent plant.
- Planting the seeds and observing the phenotypic ratios of the offspring.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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