Robert Hooke looked through a primitive microscope at a thinly cut piece of cork. He saw a series of walled boxes that reminded him of the tiny rooms, or cellula, occupied by monks.
All organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. All cells come from pre-existing cells. And Anton Van Leeuwenhoek made his version of the microscope and discovered something very odd when he looked a the gunk on his teeth.
D=misreading the instrument
There will be a defect. Some legs will most likely be longer than others.
Recessive traits often seem to disappear because two recessive alleles are needed to produce the recessive phenotype. They can skip a generation and then reappear if an individual inherits two copies of the recessive gene. Mendel's experiments revealed that phenotypes could be hidden in one generation, only to reemerge in subsequent generations.
Recessive traits disappear because recessive alleles can hide out in heterozygotes, allowing them to persist in gene pools and natural selection can only see the phenotype, not the genotype. While harmful recessive alleles will be selected against and it's almost impossible for recessive alleles to completely disappear from a gene pool.
To learn more about recessive alleles, here
brainly.com/question/16936050
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