Answer:
b. gene; DNA strand; chromosome; genome
Explanation:
The smallest unit in genetic structure will be gene which is a segment of DNA. After that comes DNA strand which may contain one or more genes. A chromosome is a larger structure as compared to a DNA strand because a chromosome contains two DNA strands which are joined at centromere. All the chromosomes in an individual collectively form genome so genome is an even larger term when it comes to genetic information.
Genetic information can be organized from smallest to largest as follows: DNA strand, gene, chromosome, and genome. The correct answer from your list is 'b'.
The levels of genetic information, organized from smallest to largest, are as follows: DNA strand, gene, chromosome, and genome. Let's break it down step by step:
Therefore, the correct answer from your list would be option 'b': gene, DNA strand, chromosome, genome.
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The provided question is not complete as it lacks the appropriate choices for the answer, however, the correct choices are:
Which of the following will NOT prevent many bacterial infections?
a. allowing foods to cool completely before refrigerating
b. washing hands and surfaces with soap and water
c. storing food in a refrigerator
d. heating objects to very high temperatures
Answer:
The correct answer would be - allowing foods to cool before refrigerating.
Explanation:
Bacterial infections can be prevented by many processes such as washing hands with soap and water thoroughly for a minimum of twenty seconds. Storing food in the refrigerator helps the food to be fresh and infection-free from various microbes.
Heating the food, water, and tools to very high temperature helps in killing the bacteria present in these and leads to bacterial infection. Cooling the food before storing it in the refrigerator may cause bacteria to infect the food.
In population individuals where 149 have the A1A1 genotype, 18 have the A1A2 genotype, and 154 have the A2A2 genotype, so the allele frequency of A1 is 0.49.
The incidence of a gene variant within a population is represented by the allele frequency. Alleles are different versions of a gene that share the same genetic locus on a chromosome.
To determine the allele frequency of A1
There is the formula:
frequency of A1 = (2 x number of A1A1) + Number of A1A2/ 2 x population
so, A1A1 = 149
A1A2 = 18
Population = 149 + 18 + 154 = 321
The frequency of A1 = (2 x 149) + 18/ 2 x 321
hence the frequency of A1 = 0.49
Therefore, the allele frequency of A1 is 0.49.
Learn more about alleles, here:
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Answer:
A or b
Explanation:
A population of raccoons lives in a forested area with lots of trees. The raccoons eat insects, eggs, berries, nuts, and small animals such as
rodents and frogs. One of the main predators of the raccoons are coyotes, which also prey on rabbits.
Identify whether the changes to the ecosystem are more likely to increase or decrease the population of raccoons.
Large parts of the forest
are cut down for wood.
Pollution from a nearby farm
decreases the population
of insects in the forest.
Additional rain increases
the population of plants
in the forest
More permits to hunt
coyotes are approved.
A disease decreases
the population of rabbits
in the forest.
Frogs in a pond near
the forest experience
a population surge.
Increases Population
Decreases Population
Answer:
Explanation:
A
Answer: Interphase
The pericytes are in the interphase of the cell cycle. This is the phase of the cell cyclebetween each cell division and is the phase in which the cell obtains nutrients,grows, reads its DNA, and conducts other normal cell functions including thearrest of the growth of the pericytes that were treated so that they would notdivide but continue to function normally.
The correct answer is - B) more; in total.
The urban areas use much more energy than the rural areas, by far. The reasons for that are numerous, with the two biggest being the number of people and the industry.
The number of people living in urban areas is higher than the number of people living in rural areas. Also, the people in the urban areas use much more energy because they rely on much more technology, technology that uses energy in order to work.
Most of the industry is also located in and around the urban places. The industry is a huge consumer of energy, thus increasing the usage of energy further more.