How can the environment affect a phenotype quizlet?

An organism’s phenotype is a combination of genetic factors, environmental factors, and the interactions between them. For instance, environmental changes can lead to changes in the genotype of the organism: if the pH in the soil where hydrangeas grow is acidic, the hydrangeas will turn blue.

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Which of the following are examples of environmental effects on phenotype quizlet?

Which of the following are examples of environmental effects on phenotype? The amount of sunlight experienced by a sunflower affects the number of seeds produced. The number of seeds eaten by a bird affects its weight. In a certain plant, fruit color is affected by an epistatic interaction between two genes.

Does environment always affect phenotype?

Genotype generally remains constant from one environment to another, although occasional spontaneous mutations may occur which cause it to change. However, when the same genotype is subjected to different environments, it can produce a wide range of phenotypes.

How can environmental factors affect the expression of genes?

Environmentally induced changes in gene expression occur when exposure to chemicals changes which genes are turned “on” or “off”—which can change how the cells function and thus a person’s predisposition to disease. The effect of this chemical modification is called epigenetic regulation.

How environmental factors affect the variation and distribution of expressed traits in a population?

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 can the environment 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.

What are the resulting phenotypes?

phenotype, all the observable characteristics of an organism that result from the interaction of its genotype (total genetic inheritance) with the environment. Examples of observable characteristics include behaviour, biochemical properties, colour, shape, and size.

Which is an example of environmental influence on gene expression?

Drugs and Chemicals

The presence of drugs or chemicals in an organism’s environment can also influence gene expression in the organism. Cyclops fish are a dramatic example of the way in which an environmental chemical can affect development.

Which of the following hypotheses did Thomas Hunt Morgan propose for the unexpected results he obtained when studying transmission of genes in Drosophila?

Which of the following hypotheses did Thomas Hunt Morgan propose for the unexpected results he obtained when studying transmission of genes in Drosophila? The likelihood of a crossover between genes is related to how far apart they are on the chromosome.

How many ABO phenotypes blood types are there quizlet?

The ABO blood group antigens are encoded by one genetic locus, the ABO locus, which has three alternative (allelic) forms—A, B, and O. A child receives one of the three alleles from each parent, giving rise to six possible genotypes and four possible blood types (phenotypes).

In what type of inheritance pattern are phenotypes dependent on the parental origin of the alleles?

Blood Type	Related Genotype(s)
AB	AB
O	OO

How does environmental factors affect the expression of traits?

Environmental Factors Interact with Genes

Environmental factors often influence traits independently of genes. But not always. Sometimes the environment changes a gene—either its DNA sequence or its activity level. Either of these effects can change the proteins that are made from a gene, which in turn affects traits.

Does the environment modify the phenotype give examples?

Environmental conditions, such as temperature and availability of nutrients can affect phenotypes. For example, temperature affects coat color in Siamese cats. The dark “points” on this Siamese cat are caused by a gene that codes for a temperature-sensitive enzyme.

Which human phenotype is affected by environmental and genetic factors?

Phenotype is the observable physical or biochemical characteristics of an individual organism, determined by both genetic make-up and environmental influences, for example, height, weight and skin colour. Associate Professor Peter Dearden, from the University of Otago, is interested in how genotype makes phenotype.

How does the environment influence gene expression quizlet?

Environmental factors can affect gene expression such as: the production of skin pigmentation during exposure to sunlight in humans. In embryonic development, the embryo contains an uneven distribution of chemicals called morphogens.

What are examples of environmental influences?

• Chemical Safety. …
• Air Pollution. …
• Climate Change and Natural Disasters. …
• Diseases Caused by Microbes. …
• Lack of Access to Health Care. …
• Infrastructure Issues. …
• Poor Water Quality. …
• Global Environmental Issues.

How do environmental factors affect child development?

An enriching and stimulating home environment fosters healthy growth and brain development by providing a child with love, emotional support, and opportunities for learning and exploration. In families where only one parent is present, there are often fewer economic and emotional resources.

How can the environment affect an organism’s traits give an example your answer?

Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted. The dog is likely to be overweight if the environmental factors are not changed.

What best describes the factors that affect a phenotype?

The genotype and the environment both affect phenotype.

How can the environment affect an organism’s traits give an example?

Food, temperature, sunlight, and water are examples of environmental factors that can affect an organism’s traits. Many characteristics of plants and animals involve both inheritance and the environment. Learned experiences can change animal behavior and affect animal traits as they develop.

How can populations adapt to changes in the environment over time?

Natural selection provides a mechanism for species to adapt to changes in their environment. The resulting selective pressures influence the survival and reproduction of organisms over many generations and can change the distribution of traits in the population. This process is called adaptation.

What are 3 examples of phenotypes?

• Eye color.
• Hair color.
• Height.
• Sound of your voice.
• Certain types of disease.
• Size of a bird’s beak.
• Length of a fox’s tail.
• Color of the stripes on a cat.

How do genes affect phenotype?

Diploid organisms inherit two alleles for each gene; one allele from each parent. Interactions between alleles determine an organism’s phenotype. If an organism inherits two of the same alleles for a particular trait, it is homozygous for that trait. Homozygous individuals express one phenotype for a given trait.

What conclusion did Morgan draw after breeding populations of fruit flies where only males had white eyes?

Morgan began breeding the white-eyed mutant fly and found that in one generation of flies, the trait was only present in males. Through more breeding analysis, Morgan found that the genetic factor controlling eye color in the flies was on the same chromosome that determined sex.

How did Thomas Hunt Morgan explain his findings?

To explain this curious phenomenon, Morgan developed the hypothesis of sex-limited—today called sex-linked—characters, which he postulated were part of the X-chromosome of females. Other genetic variations arose in Morgan’s stock, many of which were also found to be sex-linked.

On what chromosome did Thomas Hunt Morgan determine that the gene causing the white eye trait in fruit flies resides?

In January 1910, a century ago, Thomas Hunt Morgan discovered his first Drosophila mutant, a white-eyed male (Morgan 1910). Morgan named the mutant gene white and soon demonstrated that it resided on the X chromosome. This was the first localization of a specific gene to a particular chromosome.

Could a person with O+ blood have two parents with O blood?

Two parents who have O positive blood could easily have a child who is O negative. In fact, most children who are O negative have parents who are positive, since the +- combination is so much more common than the — combination.

Which of these is an example of an environmental effect on 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.

Which of the following are examples of environmental effects on phenotype quizlet?

Which of the following are examples of environmental effects on phenotype? The amount of sunlight experienced by a sunflower affects the number of seeds produced. The number of seeds eaten by a bird affects its weight. In a certain plant, fruit color is affected by an epistatic interaction between two genes.

How do we predict the phenotype and genotype of offspring in a genetic cross?

A Punnett square allows the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes. A Punnett square can be used to determine a missing genotype based on the other genotypes involved in a cross.

Can a mother with type B blood have a baby with type A?

Genotype (DNA)	Blood Type
OO	O blood type

What does it mean if someone is Rh positive?

Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you’re Rh positive. If your blood lacks the protein, you’re Rh negative. Rh positive is the most common blood type.

How does genotype and environment affect phenotype?

Genotype generally remains constant from one environment to another, although occasional spontaneous mutations may occur which cause it to change. However, when the same genotype is subjected to different environments, it can produce a wide range of phenotypes.

How can environmental factors affect the expression of genes?

Environmentally induced changes in gene expression occur when exposure to chemicals changes which genes are turned “on” or “off”—which can change how the cells function and thus a person’s predisposition to disease. The effect of this chemical modification is called epigenetic regulation.

How does environment influence gene expression?

Positive experiences, such as exposure to rich learning opportunities, and negative influences, such as malnutrition or environmental toxins, can change the chemistry that encodes genes in brain cells — a change that can be temporary or permanent. This process is called epigenetic modification.

Why are environmental factors important when assessing an individual’s health quizlet?

why are environmental factors important to consider when assessing an individual’s health? Some health risks are increased by heredity, which manifest under certain environmental conditions. Certain environments can lead to an increased risk of developing certain diseases.

What are environmental factors?

Air, water, climate, soil, natural vegetation and landforms are all environmental factors. By definition, the environmental factors affect everyday living, and play a key role in bringing health differences across the geographic areas.

What influences gene expression by affecting the rate of translation quizlet?

Ribosomes, aminoacyl tRNAs, initiation factors, and elongation factors are all required for the translation of mRNA molecules. The availability of these components affects the rate of translation and therefore influences gene expression.

What is the role of the promoter in gene expression quizlet?

The promoter: the place where RNA polymerase binds. The operator: an “on-off switch” to control transcription of the enzyme-coding genes.

What is the effect of DNA methylation on gene expression?

DNA methylation regulates gene expression by recruiting proteins involved in gene repression or by inhibiting the binding of transcription factor(s) to DNA.

How does the environment affect you?

The environment can facilitate or discourage interactions among people (and the subsequent benefits of social support). For example, an inviting space with comfortable chairs and privacy can encourage a family to stay and visit with a patient. The environment can influence peoples’ behavior and motivation to act.

What are the effects of these environmental issues?

• Climate change including Global warming.
• Acid rain, photochemical smog and other forms of pollution.
• Ocean acidification.
• Displacement/extinction of wildlife.
• Resource depletion – forests, water, food.
• and more.

How does environment affect or influence human development?

Over the past 100 years, the study of environmental influences on human physical growth and development has focused on the influences of social and economic factors; family and household characteristics; urbanization/modernization; nutrition; and features of the physical environment such as altitude, temperature and …

What environmental factors affect behavior?

People’s mood and wellbeing are affected by various elements of the built environment including spatial allocations, lighting, access to nature, colour, indoor air quality, noise, thermal comfort, user control of space, and preferred environments (i.e., those that are coherent and engaging).

How does the environment affect growth and development?

Environmental factors that influence growth and development in humans include childhood housing arrangements, family income, educational opportunities, interpersonal relationships and employment-related factors, according to Best Start, Ontario’s Maternal Newborn and Early Child Development Resource Centre.

Does the environment affect the phenotype of an individual?

Effects of Environment on Phenotype. Genes play an important part in influencing phenotype, but genes are not the only influence. Environmental conditions, such as temperature and availability of nutrients can affect phenotypes.

Which human phenotype is affected by environmental and genetic factors?

Phenotype is the observable physical or biochemical characteristics of an individual organism, determined by both genetic make-up and environmental influences, for example, height, weight and skin colour. Associate Professor Peter Dearden, from the University of Otago, is interested in how genotype makes phenotype.

What is an environmental trigger give an example?

Some common triggers include dust mites and mold, pets, strong odors, cockroaches, cigarette and cigar smoke, viral or sinus infections, emotions, weather changes, pollution, and exercise. (See “Examples of Triggers” for a more extensive list.)

What are some environmental factors that can affect the growth of organisms?

So what environmental conditions can affect microbial growth? Temperature, oxygen, pH, water activity, pressure, radiation, lack of nutrients…these are the primary ones.

How living things are being harmed by environmental changes?

Changes to air: Cars, buses, trains, and other types of transportation use fuels that pollute the air. Factories also pollute the air when they burn chemicals and release gases into the air. Changes to living things: Overhunting and overfishing can harm or destroy populations of organisms.

How does the change in the environment affect the species population in an area?

If any of the limiting factors change, animal and plant populations also change. Some changes may cause a population to increase. If there are more plants than usual in an area, populations of animals that eat that plant may increase.

What are 3 examples of phenotypes?

• Eye color.
• Hair color.
• Height.
• Sound of your voice.
• Certain types of disease.
• Size of a bird’s beak.
• Length of a fox’s tail.
• Color of the stripes on a cat.

What is phenotypic effect?

phenotype, all the observable characteristics of an organism that result from the interaction of its genotype (total genetic inheritance) with the environment. Examples of observable characteristics include behaviour, biochemical properties, colour, shape, and size.

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