Parents can pass on chromosomes to their children that are different than their own when the new gene combinations are created by crossing over. The exchange of genetic material between homologous chromosomes is known as crossing over which occurs in meiosis. When homologous chromosomes pair up and exchange different segments of the genetic material. As the result, a new combination of genes will be formed. If there was not crossing over, all genes on a chromosome would be inherited together.crossing over of homologous chromosomes during meiosis
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The chloroplasts had inner membrane
Explanation:
The primitive photoautotrophs utilized hydrogen sulphide as the electron donor to perform photosynthesis for energy production.
Later upon understanding the endosymbiotic relationship of cyanobacteria which resided in the mitochondria of a eukaryotic host cell, the use of chloroplasts for photosynthesis was understood.
Generations after generations led to the development of chloroplasts by the cyanobacteria due to this symbiotic relationships which developed into the chloroplasts.
The unique presence of the inner membrane and its components like the stroma, thyllakoids helped the organism to utilize water as the electron donor for photosynthesis like the present day eukaryotes. This is the main reason why cyanobacteria is considered as the ancestor for eukaryotes.
<span> The feature which is not the result of a glacier carving out rock as it moves is
</span><span>A. Terminal Moraine
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The feature which is the result of a glacier carving out rock as it moves is
</span>A. Roche Moutonnees
Explanation:
Rôche moutonnée (or sheepback) could be a rock formation created by the passing of an ice mass. The passage of ice mass ice underlying bedrock usually leads to uneven erosional forms as a result of abrasion on the "stoss" (upstream) facet<span> of the rock and plucking on the "lee".
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A terminal ground<span> </span>conjointly referred to as finish ground<span>, </span>could be a form of ground<span> that forms at the snout (edge) of an </span>ice mass<span>, marking its </span>most<span> advanced. At </span>now<span>, </span>rubble<span> that has accumulated by plucking and abrasion.</span>
