Prior to the work of Mendel, inheritance was viewed as resulting from the BLENDING of phenotypic traits within fixed, unchanging species. Mendel discovered how traits are inherited across generations.
Mendel was a scientist who experimented on pea hybrids and now he is known as the father of modern genetics.
The Mendel principles include:
- The Law of Segregation posits that phenotypic inherited traits can be controlled by two 'factors' (i.e., alleles), which separate (i.e., segregate) and pass into germinal gametic cells.
- The Law of Independent Assortment posits that these factors do not depend upon each other, but instead, alleles are independently sorted into germinal (gametes) cells.
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The distribution of related animals and plants across the world shows that those organisms have common ancestor.
There is a term in biology- the most recent common ancestor (MRCA) and it is the most recent individual from which all the organisms are directly descended. It is hard for scientist to identify the exact MRCA, but it is estimated the time at which the MRCA lived (3.5 to 3.8 billion years ago). It is called Last Universal Common Ancestor (LUCA).
Answer:
The gases and dust particles thrown into the atmosphere during volcanic eruptions have influences on climate. Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation. The cooling effect can last for months to years depending on the characteristics of the eruption. Volcanoes have also caused global warming over millions of years during times in Earth’s history when extreme amounts of volcanism occurred, releasing greenhouse gases into the atmosphere.
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Everyone could get cancer, most likely people who has a bad immune system, cancer develop when cells starts to reproduce in a certain way. There’s different types of cancer.
