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What is gonadosomatic index?
Gonadosomatic Index (GSI) can be expressed in different units, but is based on the ratio of gonad weight to total body weight. It is often expressed as a percent: [total weight of the gonad / total weight of the intact fish] X 100
What unit is usually used to define the proportions of any individual figure?
The length of the head, from chin to top of skull, is the unit usually used to define the proportions of an individual figure.
What is a elemental composition?
Elemental composition refers to the types and relative proportions of elements present in a substance. This composition can be expressed in terms of the atomic symbols and the number of atoms of each element in the substance. It provides valuable information about the chemical properties and behavior of the substance.
When determining percentage composition why is it acceptable to work with either molar quantities expressed in grams or average molecular quantities expressed in atomic mass units?
It is acceptable to work with either molar quantities expressed in grams or average molecular quantities expressed in atomic mass units because both methods give the same relative proportions of elements in a compound. The molar quantities expressed in grams allow for direct measurement and calculations based on mass, while the average molecular quantities expressed in atomic mass units provide a more theoretical approach in determining percentage composition.
Why do the recessive genes do not disappear from the population?
Recessive genes can persist in a population because they can be carried in individuals without being expressed. These hidden recessive genes can be passed down through generations, only showing up if inherited from both parents. Additionally, genetic diversity can help maintain recessive genes in a population even if they are not expressed in every generation.
What role does natality have on populations?
Natality is the ratio of live births in an area to the population of that area; expressed per 1000 population per year.
How is population density expressed?
Population density is typically expressed as the number of people per unit area, such as per square kilometer or square mile. It provides a measurement of the concentration of people in a given area and is useful for understanding the distribution of populations.
What is gonadosomatic index?
Gonadosomatic Index (GSI) can be expressed in different units, but is based on the ratio of gonad weight to total body weight. It is often expressed as a percent: [total weight of the gonad / total weight of the intact fish] X 100
How do you calculate fecundity?
Fecundity is typically calculated by assessing the number of offspring produced by an individual or population over a specific time period. It can be expressed as the average number of offspring per reproductive cycle or the total number of offspring produced per individual throughout its reproductive lifespan. In ecological studies, fecundity is often represented as a function of age or size, and may also take into account environmental factors that influence reproductive success.
What is a statistic that shows the number of live births per thousand population?
The statistic that shows the number of live births per thousand population is called the "crude birth rate." It is typically expressed as the number of live births in a given year divided by the total population, then multiplied by 1,000. This measure helps to provide insights into population growth and reproductive trends within a specific region or country.
What does the founder effect refer to?
Genetic drift. It is when a representative sample of emigrant alleles that break off from a larger population and travel to a new location do not represent a complete frequency of the parent populations alleles. They then vary from a little to greatly from the parent population. Deleterious recessive alleles can be expressed in this founder population in greater frequency sometimes. Look up the ' Quebec effect.
What unit is usually used to define the proportions of any individual figure?
The length of the head, from chin to top of skull, is the unit usually used to define the proportions of an individual figure.
What is an example of a rate of change that is a fraction?
Inflation of prices. Population growth, particularly in comparison between different countries. Decline of animal and bird populations. That's three for a start. Anything that has a change expressed as a fraction (over a day, month, year etc).
Why are populations more genetically diversed than the individuals that make them?
Genetic variation is expressed in genes which form chromosomes. Thus any individual in a population of breeding animals can only 'hold' the gene variations that can fit into that individuals chromosomes, while the number of chromosomes in the population is the number found in the individual * the number of individuals comprising the population, a much greater space for 'holding' variations in genes.
Why are many crime statistics expressed as rates?
Crime statistics are often expressed as crimes per 100,000 people. This allows for easy comparison of crime between two cities or states with different populations.
What are the measurements used to describe changing populations?
Changing populations are often described using several key measurements: population size, which indicates the total number of individuals; population density, which reflects the number of individuals per unit area; and growth rate, which measures the change in population size over time, often expressed as a percentage. Additionally, metrics like birth rates, death rates, and migration rates provide insights into the dynamics of population change. These measurements help in understanding trends, predicting future changes, and informing resource management and conservation efforts.
'Law of multiple Proportion was discovered by whom?
The law of multiple proportions was proposed by John Dalton in the early 19th century. It states that when elements combine to form compounds, the ratio of masses of one element that combines with a fixed mass of the other element can be expressed in small whole numbers.
