<span>Bacteria are necessary because they are doing the very important processes for the nitrogen cycle like as ammonification, nitrogen fixation, and nitrification.
As Nitrogen cannot be used in its form because of its chemical form so it is changed to various forms in the nitrogen cycle, bacteria has a big help in the process.</span>
Dr. Evil has just discovered a way to prevent mating from occurring during meiosis in the gametes of his lab rats. the effects her discovery would have on laboratory mice is that prophase I would be interrupted and there would be reduced genetic variation in the offspring of the mice. because crossover occurs during prophase I of meiosis I and results in genetic recombination, which promotes genetic variation. If this is avoided, genetic variation would be significantly reduced in the offspring.
<h3>What happens in prophase 1?</h3>
Prophase I – in this stage, the condensation of the chromosomes occurs; the temporary disappearance of the carioteca; disappearance of the nucleolus and the duplication of centrioles to the poles of the cell. In prophase, the exchange of genes (crossing-over) also takes place, through the exchange of pieces between homologous chromosomes.
With this information, we can conclude that Prophase I is the first stage of meiosis I. In it, the pairing of homologous chromosomes occurs and a phenomenon known as crossing-over can occur.
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<span>Quadriceps spindle is the receptor.
The patellar reflex is also called a knee-j erk reflex. In a knee-j erk reflex arc the sensory neuron directly connects to the motor neuron in the spinal cord. This is called a simple reflex arc. from the spindle to where it connects with the motor neuron in the spinal cord.</span>
Insects<span>, which are a type of </span>arthropod<span>, are easily the most numerous group of multicellular </span>organisms<span> on the planet, with about a million species identified so far. The title of heaviest insect in the world has many rivals, the most frequently crowned of which is the </span>larval stage<span> of the </span>goliath beetle<span>, </span>Goliathus goliatus<span>, the top size of which is at least 115 g (4.1 oz) and 11.5 cm (4.5 in). The largest confirmed weight of an adult insect is 71 g (2.5 oz) for a </span>giant weta<span>, </span>Deinacrida heteracantha,[1]<span> although it is likely one of the </span>elephant beetles<span>, </span>Megasoma elephas<span> and </span>Megasoma actaeon<span>, or </span>goliath beetles, both of which can commonly exceed 50 g (1.8 oz) and 10 cm (3.9 in), can reach a higher weight.<span>[1]</span>
