In order to write an essay about Gregor Mendel, there are some key information that you need to know:
- Gregor Mendel is a Botanist, a Mathematician, and a teacher
- His nationality is Austria-Hungary
- he was born on the 20th July, 1822 and died 6th January 1884
- He is famously known for his works in genetics
- He performed several hybridization experiments using the pea plant
- He formed 2 laws from his experiment - the law of segregation and the law of independent assortment of genes
Putting all these information together and more, you will be able to write an essay on the person of Gregor Mendel.
More on Gregor Mendel can be found here: brainly.com/question/16176741
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Cryosphere can be defined as the portion of the earth’s where the water is in its solid form which includes lake ice, snow, ice caps, sea ice. Thus, cryosphere form an integral part of the global climate system and it overlap with the hydrosphere. Furthermore, the snow or ice areas are subjected to temperature below 320F for at least part of the year.
The normal membrane potential inside the axon of nerve cells is –70mV, and since this potential can change in nerve cells it is called the resting potential. When a stimulus is applied a brief reversal of the membrane potential, lasting about a millisecond, occurs. This brief reversal is called the action potential
<span>A stimulus can cause the membrane potential to change a little. The voltage-gated ion channels can detect this change, and when the potential reaches –30mV the sodium channels open for 0.5ms. The causes sodium ions to rush in, making the inside of the cell more positive. This phase is referred to as a depolarisation since the normal voltage polarity (negative inside) is reversed (becomes positive inside). </span>
<span>Repolarisation. At a certain point, the depolarisation of the membrane causes the sodium channels to close. As a result the potassium channels open for 0.5ms, causing potassium ions to rush out, making the inside more negative again. Since this restores the original polarity, it is called repolarisation. As the polarity becomes restored, there is a slight ‘overshoot’ in the movement of potassium ions (called hyperpolarisation). The resting membrane potential is restored by the Na+K+ATPase pump.</span>
The male fruit fly has an XY profile of the sex chromosomes, and the female has an XX profile of the sex chromosomes.
If a male is white-eyed, then it must have a white recessive allele on his only X chromosome and the red eyed female can be homozygous (having two dominant red eye alleles) or heterozygous (having both a dominant and a recessive allele).
If the female is homozygous then all of the offspring will be red-eyed, and if she's heterozygous then half of the offspring will be white eyed. (see the table provided below)