Best answer: What causes a phenotype?

Phenotypes are traits or characteristics of an organism that we can observe, such as size, color, shape, capabilities, behaviors, etc. … Phenotypes can be caused by genes, environmental factors, or a combination of both. Phenotypic variation, then, is the variability in phenotypes that exists in a population.

What causes phenotype genotype?

Genotype and phenotype describe aspects of the discipline of genetics, which is the science of heredity, genes and variation in organisms. … DNA, or deoxyribonucleic acid, is responsible for genotype and partially responsible, along with the environment, for phenotype.

What causes genotype?

A genotype is an individual’s collection of genes. The term also can refer to the two alleles inherited for a particular gene. The genotype is expressed when the information encoded in the genes’ DNA is used to make protein and RNA molecules.

What type of molecule causes the phenotype?

The proteins are directly responsible for the phenotype of an organism.

How is DNA responsible for phenotype?

Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.

What environmental factors affect phenotype?

Environment Can Impact Phenotype

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.

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Which is a phenotype?

A phenotype is an individual’s observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.

What is the cause and effect relationship between genotype and phenotype?

The sum of an organism’s observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not. Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.

Do proteins cause phenotype?

The traditional genotype-to-phenotype theory embraces the view that the encoded protein shape together with gene expression level largely determines the resulting phenotypic trait.

What controls the phenotype of an organism?

An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.

What are the 3 types of phenotypes?

With one locus and additive effects we have three phenotypic classes: AA, Aa and aa.