AP BIOLOGY

Detailed explanation-1: -While some traits are governed by genes which are inherited from parents to the offsprings, there are traits that are acquired through observing, learning, most of which are determined by a combination of environmental factors and genes.

Detailed explanation-2: -Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative (such as eye color) or quantitative (such as height or blood pressure). A given trait is part of an individual’s overall phenotype.

Detailed explanation-3: -Each Organism’s Traits Are Inherited from a Parent through Transmission of DNA. Drosophila chromosome. Scientists first discovered chromosomes in the nineteenth century, when they were gazing at cells through light microscopes.

Detailed explanation-4: -One copy is inherited from their mother (via the egg) and the other from their father (via the sperm). A sperm and an egg each contain one set of 23 chromosomes. When the sperm fertilises the egg, two copies of each chromosome are present (and therefore two copies of each gene), and so an embryo forms.

Detailed explanation-5: -Most traits are determined by more than one gene. For example, skin color and height are determined by many genes. Some phenotypes however, are determined by a single gene.