How are chromosomes and genes alike?(1 point)
Responses
They are both found on chromatids.
They are both found on chromatids.
They both contain genetic material.
They both contain genetic material.
They both encode a single protein.
They both encode a single protein.
They are both part of DNA.
They are both part of DNA.
In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr?(1 point)
Responses
some round and some wrinkled
some round and some wrinkled
slightly wrinkled
slightly wrinkled
wrinkled
wrinkled
round
round
What determines a trait of an organism?(1 point)
Responses
the number of dominant alleles
the number of dominant alleles
the number of copies of the gene
the number of copies of the gene
its phenotype
its phenotype
the combination of its alleles
the combination of its alleles
Which statement is accurate about dominant alleles?(1 point)
Responses
They are indicated by lowercase letters.
They are indicated by lowercase letters.
They are expressed only when a recessive allele is not present.
They are expressed only when a recessive allele is not present.
They are expressed whenever present.
They are expressed whenever present.
They result in the trait of shortness in pea plants.
They are expressed whenever present.
Consider the following scenario:
In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype?
(1 point)
Responses
bb
bb
BB
BB
BB and bb
BB and bb
Bb
bb
Which statement is true of all proteins?(1 point)
Responses
They are created by mutations in DNA.
They are created by mutations in DNA.
They carry oxygen in human blood.
They carry oxygen in human blood.
Their main function is to cause mutations.
Their main function is to cause mutations.
Their structure is related to their function.
Their structure is related to their function.
What is the main benefit of genetic biodiversity?(1 point)
Responses
Genetic biodiversity helps individuals compete with each other.
Genetic biodiversity helps individuals compete with each other.
Genetic biodiversity helps individuals produce more offspring.
Genetic biodiversity helps individuals produce more offspring.
Genetic biodiversity helps populations avoid predators.
Genetic biodiversity helps populations avoid predators.
Genetic biodiversity helps populations adapt to environmental changes.
Genetic biodiversity helps populations adapt to environmental changes.
Which statement is true?(1 point)
Responses
Neutral mutations occur when a mutation in a DNA region results in the same sequence as the original.
Neutral mutations occur when a mutation in a DNA region results in the same sequence as the original.
Neutral mutations occur when a mutation in a DNA region provides an advantage that helps the organism survive.
Neutral mutations occur when a mutation in a DNA region provides an advantage that helps the organism survive.
Neutral mutations occur when a mutation is found in a DNA region and results in a harmful disease.
Neutral mutations occur when a mutation is found in a DNA region and results in a harmful disease.
Neutral mutations occur when a mutation is found in a DNA region that codes for proteins.
Neutral mutations occur when a mutation in a DNA region results in the same sequence as the original.
Three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow. One plant grew to have a purple flower while the other two grew white flowers. What is the most likely conclusion that can be made for the change in flower color?(1 point)
Responses
Genetic factors caused the differences in flower color.
Genetic factors caused the differences in flower color.
Environmental conditions caused the differences in flower color.
Environmental conditions caused the differences in flower color.
Environmental factors caused a genetic mutation that caused the differences in flower color.
Environmental factors caused a genetic mutation that caused the differences in flower color.
Genetic factors caused environmental changes that caused the differences in flower color.
Genetic factors caused the differences in flower color.
Question
A scientist sets up terrariums in a laboratory and observes the growth of lizards in each terrarium. Which of the following observations could be used as evidence that the amount of space in an environment can affect an animal's growth?(1 point)
Responses
Two different species of lizard grow to different sizes in the same terrarium.
Two different species of lizard grow to different sizes in the same terrarium.
Two lizards of the same species grow to different sizes in terrariums with different food supplies.
Two lizards of the same species grow to different sizes in terrariums with different food supplies.
Two lizards of the same species grow to different sizes in the same terrarium.
Two lizards of the same species grow to different sizes in the same terrarium.
Two lizards of the same species grow to different sizes in different-sized terrariums.
Two lizards of the same species grow to different sizes in different-sized terrariums.
A species of fox lives in the arctic where the ground is covered in white snow most of the year. These arctic foxes hunt rodents and other small mammals, while their predators include eagles, wolves, and polar bears. A mutation in its DNA causes a fox to have white fur rather than brown. Given this information, would you classify this mutation as a harmful, beneficial, or neutral mutation? Would this make the fox more or less likely to survive? Explain your answer. make it short
The mutation of having white fur in the arctic environment can be classified as a beneficial mutation. This is because the white fur provides camouflage against the snowy background, making the fox less visible to its predators. It increases the fox's chances of survival by improving its ability to hunt and avoid being hunted.
a little shorter
The mutation of white fur in the arctic environment is beneficial as it provides camouflage, increasing the fox's chances of survival.
Rabbits are very popular domesticated animals, so popular that there are over 300 breeds of domesticated rabbits in the world. You attend a rabbit show and notice that all of the breeds vary in many characteristics, such as size, color, and fur length. You notice that there is weight information on the cages of all rabbit individuals at the show and decide to jot down data for two specific rabbit breeds (in pounds):
Breed A: 10, 8, 7, 10, 9, 9, 10, 9
Breed B: 10, 12, 14, 13, 10, 15, 11, 12
In three to five sentences, 1) calculate the average weights of the two rabbit breed groups, 2) describe some factors that could contribute to the different weights seen within breeds, and 3) describe how you would track and find the growth rate of the two rabbit breeds during an investigation.
1) To calculate the average weights of the two rabbit breed groups, add up all the weights for each breed and divide by the number of data points. For Breed A, the average weight would be (10+8+7+10+9+9+10+9) / 8 = 9 pounds. For Breed B, the average weight would be (10+12+14+13+10+15+11+12) / 8 = 12 pounds.
2) Factors that could contribute to the different weights seen within breeds include genetics, diet, exercise, and overall health. Genetic variations can determine the natural size and weight potential of each breed. Diet and exercise play a significant role in controlling weight, with rabbits that consume more calories and have less physical activity likely to be heavier. Health conditions or underlying diseases can also contribute to weight differences.
3) To track and find the growth rate of the two rabbit breeds during an investigation, you would need to measure the weights of individual rabbits regularly over a specific time period. This could be done by using a scale and documenting the weights at consistent intervals, such as weekly or monthly. By comparing the weights at different time points, you can calculate the growth rate by dividing the change in weight by the time elapsed.
3-5 sentence over all 3 questions
1) The average weight for Breed A is 9 pounds, while the average weight for Breed B is 12 pounds.
2) Factors contributing to weight variations within breeds include genetics, diet, exercise, and overall health. Genetic differences can result in varying natural size and weight potential. Diet and exercise levels play a role, with rabbits consuming more calories and having less physical activity likely to be heavier. Health conditions and underlying diseases can also impact weight.
3) To track and find the growth rate of the two rabbit breeds, weights should be regularly measured over a specific time period. This can be done through consistent weighing, such as weekly or monthly, using a scale. By comparing weights at different time points, the growth rate can be calculated by dividing the weight change by the time elapsed.
shorten numbers 2-3 1 is fine
1) The average weight for Breed A is 9 pounds, while for Breed B it is 12 pounds.
2) Factors influencing weight variations within breeds include genetics, diet, exercise, and overall health.
3) To track and calculate the growth rate of the rabbit breeds, regular weighing of individual rabbits over a specific time period is necessary.
A student investigated the effect of root space on plant growth. The student grew two groups of plants of the same variety. Both groups received the same amount of water and sunlight and grew in the same type of soil. The plants in Group A were grown in cube-shaped containers that were 3 centimeters deep. The plants in Group B were grown in cube-shaped containers that were 10 centimeters deep. The table shows the student's observations
Week Plant Group A (Average Height, cm) Plant Group B (Average Height, cm)
1 2 3
2 3 6
3 5 8
4 7 10
5 8 14
6 10 18
What was the effect of root space on plant growth based on the student's investigation? Use the data from the table to support your answer. Explain how you would know whether this effect was likely due to environmental or genetic factors.
(2 points)
Based on the data from the table, it is evident that the plants in Group B, which were grown in containers with greater root space (10 centimeters deep), exhibited greater average heights compared to the plants in Group A (3 centimeters deep). This indicates a positive effect of root space on plant growth.
To determine whether the effect is likely due to environmental or genetic factors, it would be necessary to conduct further experiments. One approach would be to repeat the investigation with the same variety of plants but altering the depth of the containers randomly within each group. If the trend of greater average heights in containers with greater depth persists even with random variations, it would suggest a stronger influence of environmental factors, such as root space. On the other hand, if the trend remains consistent within specific container depths, it would indicate a potential role of genetic factors influencing plant growth. Additional research and control experiments would be needed to confirm the exact contribution of environmental and genetic factors.