Sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maiRead more
Sometimes for a species, the environmental conditions change so drastically that their
survival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maintained.
Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution. For example: A population of heat resistant bacteria in the temperaturRead more
Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution.
For example: A population of heat resistant bacteria in the temperature of the water survives if the temperature of water increases by global warming but most other bacteria would die.
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell. DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed aRead more
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell.
DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed and the structure of the individual will be entirely different.
Reflex actions are the actions which do not involve any thinking. That is why provide quick response in situations where the organism does not have enough time to think. A connection of detecting the signal from the nerves (input) and responding to it quickly (output) is called a reflex arc.Reflex aRead more
Reflex actions are the actions which do not involve any thinking. That is why provide quick response in situations where the organism does not have enough time to think.
A connection of detecting the signal from the nerves (input) and responding to it quickly (output) is called a reflex arc.Reflex arcs are formed in the spinal cord and the information (input) reaches the brain.
The brain is only aware of the signal and the response that has taken place. However, the brain has no role to play in the creation of the response.
How does the creation of variations in a species promote survival?
Sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maiRead more
Sometimes for a species, the environmental conditions change so drastically that their
See lesssurvival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maintained.
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
Trait B is likely to have arisen earlier because it exist in a higher percentage of the population as compared to trait A.
Trait B is likely to have arisen earlier because it exist in a higher percentage of the population as compared to trait A.
See lessWhy is variation beneficial to the species but not necessarily for the individual?
Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution. For example: A population of heat resistant bacteria in the temperaturRead more
Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution.
For example: A population of heat resistant bacteria in the temperature of the water survives if the temperature of water increases by global warming but most other bacteria would die.
See lessWhat is the importance of DNA copying in reproduction?
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell. DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed aRead more
DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell.
DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed and the structure of the individual will be entirely different.
See lessWhat is the role of the brain in reflex action?
Reflex actions are the actions which do not involve any thinking. That is why provide quick response in situations where the organism does not have enough time to think. A connection of detecting the signal from the nerves (input) and responding to it quickly (output) is called a reflex arc.Reflex aRead more
Reflex actions are the actions which do not involve any thinking. That is why provide quick response in situations where the organism does not have enough time to think.
A connection of detecting the signal from the nerves (input) and responding to it quickly (output) is called a reflex arc.Reflex arcs are formed in the spinal cord and the information (input) reaches the brain.
The brain is only aware of the signal and the response that has taken place. However, the brain has no role to play in the creation of the response.
See less