Environmental factors can also cause mutations in genes, and viable mutations are inherited. expression of traits, and hence affect the probability of occurrences of traits in a population. Thus the variation and distribution of traits observed depends on both genetic and environmental factors.
How does the variation and distribution of traits observed depend on genetic factors environmental factors?
The variation and distribution of traits in a population depend on genetic and environmental factors. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis.
Can inherited genetic variations be caused by environmental factors?
Although DNA replication is tightly regulated and remarkably accurate, errors do occur and result in mutations, which are also a source of genetic variation. Environmental factors can also cause mutations in genes, and viable mutations are inherited.
Is it possible for variation in a trait be the result of both environmental and genetic variation?
Both environmental and genetic effects contribute to phenotypic variation within and among populations.
What is variation of traits?
Variation of a trait in a population (total variance) is the result of genetic variation (genetic variance) and environmental variation (environmental variance) plus some interaction between both factors. The contribution of genetic variation to phenotypic variation is known as the heritability of a trait.
How environment affects the traits of organism growth?
The expression of genes in an organism can be influenced by the environment, including the external world in which the organism is located or develops, as well as the organism’s internal world, which includes such factors as its hormones and metabolism.
What factors cause inheritable genetic variations?
Inheritable Genetic Variation
Make and defend a claim based on evidence that inheritable genetic variations may result from: (1) new genetic combinations through meiosis, (2) viable errors occurring during replication, and/or (3) mutations caused by environmental factors.
How and why genetic variations and environmental factors are important in the survival of a species?
Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation.
How genetic variation and environmental factors influence the probability of survival and reproduction of a species?
The amount of genetic variation within a population may affect the likelihood of survival of the population; the less the available diversity, the less likely the population will be able to survive environmental change. … Organisms cannot intentionally produce adaptive mutations in response to environmental influences.
What is environmental variation in biology?
The differences in characteristics between individuals of the same species is called variation . … Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
How do environmental factors cause variation?
Environmental causes of variation
Characteristics of animal and plant species can be affected by factors such as climate, diet, accidents, culture and lifestyle. … Another example is that of a plant that grows in the shade of a big tree – it will grow taller to reach more light.
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.
Which environmental factor could lead to a decrease in genetic variation in a population of tuna?
Answer: The environmental factor that could lead to a decrease in genetic variation in a tuna population is an increase in pollution (second option).