use of a microscope containing improved lenses that could magnify objects almost 300-fold, or 270x. Under these microscopes, Leeuwenhoek <span>found motile objects. </span>
Anton van leeuwenhoek with the help of the microscope observed the stagnant water. He observed protozoans and at that time he named them "Animalcule" . He observed bacteria, sperm cells, blood cells, rotifers, and much more. He was the first to observe live microorganisms.
He did important observations such as the life cycle weevils, fleas and mussels, and concluded that they developed from tiny eggs refuting arguments of spontaneous generation
<span>the principal of independent assortment is the different genes </span>independently<span> separate from one another when reproductive cells develop.</span>
Humans have typically 23 pairs of chromosomes. Each pair is composed of a chromosome from the mother and another from the father. A specific locus in a chromosome is composed of two alleles. An allele inherited from the mother and the other allele inherited from the father.
