Why organisms have different phenotypes?

This is because the individuality and variation we observe in each organism is generated through a complex interaction between the organism’s “complete genetic endowment” and its environment from conception onward (Hirsch, 1963).

What causes phenotypes to be different?

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. For example, people come in all shapes and sizes: height, weight, and body shape are phenotypes that vary.

Can organisms have different phenotypes?

An organism’s genotype is a major (the largest by far for morphology) influencing factor in the development of its phenotype, but it is not the only one. Even two organisms with identical genotypes normally differ in their phenotypes.

Why do organisms with the same genotype have different phenotypes?

The same genotype, when raised in different environments results in different phenotypes. Furthermore, different genotypes respond to the same environmental changes differently from each other.

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Do all organisms have the same phenotype Why or why not?

The answer is yes, two different genotypes can result in the same phenotype. Remember, the recessive phenotype will be expressed only when the dominant allele is absent, or when an individual is homozygous recessive (tt) (Figure below).

What are the factors that affect the phenotypic variation?

Two types of factors are recognized as contributing to the phenotypic variation in a population, genetic and environmental.

What environmental factors can cause phenotypic variation in plants and animals?

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.

Why do some organisms have different phenotypes if their genotypes can never change?

However, when the same genotype is subjected to different environments, it can produce a wide range of phenotypes. These phenotypic variations are attributable to the effect of the environment on the expression and function of genes influencing the trait.

Can you have different phenotypes but the same genotype?

Different genotypes can produce the same phenotype. Different genotypes can produce the same phenotype.

How can two organisms have the same phenotype but different genotypes quizlet?

The combination of alleles in the offspring. … The masking of recessive alleles can result in organisms with the same phenotype but different genotypes. Organisms with two dominant alleles (homozygous dominant and one recessive allele (heterozygius).

Why do monozygotic twins have different phenotypes?

Even monozygotic twins, who are genetically identical, always have some variation in the way they look and act. This uniqueness is a result of the interaction between our genetic make-up, inherited from our parents, and environmental influences from the moment we are conceived.

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How can two organisms with two different genotypes have the same phenotype?

A dominant allele always expresses itself when it is present in the genotype. … Recessive alleles only demonstrate their effect if the individual has two copies of the alleles. Hence, due to the presence of dominant alleles in the genotype of organisms, phenotypes appear the same even though they differ in the genotypes.

What are the differences between genotypes and phenotypes?

The genotype is a set of genes in the DNA which are responsible for the unique trait or characteristics. Whereas the phenotype is the physical appearance or characteristic of the organism. Thus, we can find the human genetic code with the help of their genotype.

How are genotypes and phenotypes alike?

The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.