the answer would be D
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Select the THREE steps you should take if your clothes catch on fire. stop
The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo? inversion
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i just did the test, its right
What did Charles Darwin discover as a result of his experiments with breeding pigeons?Desirable traits can be selected for and bred in offspring.Humans can create new species through selective breeding.Dogs and plants can be bred the in same way as pigeons.The pigeons had distinctive traits that were passed on to offspring
The most appropriate answer would be "Desirable traits can be selected for and bred in offspring".
Charles Darwin gave the theory of evolution and explained the process of natural selection.
Natural selection is a gradual process by which nature favors the survival of organisms present with particular traits.
By natural selection, organisms with those particular or desirable traits tend to reproduce and survive more.
These desirable traits are passed onto the offspring and gradually spread throughout the population.
Read the excerpt below and answer the question. Will you then be making a request on my behalf when I am so depraved? Based on the context, what does depraved mean?
Review the chart, which shows the population sizes of three African animals in 1990 and in 2000. Population Estimates of Animals in Africa in 1990 and in 2000 1990 2000 Lions 100,000 47,000 Cheetahs 50,000 7,500 Zebras 15,000 2,500 Which explanation is best supported by the numbers in the chart? Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs. The dwindling zebra population has led to the decline of the predator lion and cheetah populations. Overhunting of lion and cheetah populations has led to a decline in the food source population. Lion and cheetah populations compete for the food source of zebras, and cheetahs outcompete lions.
A group of the same species that live in a defined area and shares the same attributes are called population. They are the inhabitants of the same species and typically are confined to an area.
Lion and Cheetah compete for the food resources like zebras, and lions overpower Cheetah.What is competition in the population?
In a population with the competing species, the animal tends to fight over the same resources and factors that they share. The factors can limit and uplift the growth of the species of the population.
Competition and predation are the limiting factors in population as they can increase and decrease the population of the species exhibiting the relationship.
The more competitive species overpowers and drives the less competitive one and the population decline of them indicates the level of the competition.
Therefore, option A is correct.
Learn more about population and competition here:
Answer: Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetah.
Limiting factors are those factors in the ecosystem which can limit the growth of population of a species in an ecosystem. Predation and competition are two limiting factors in the ecosystem that can decrease or extinct the population of a species. Predation is a limiting factor in which predatory organisms are dependent upon a prey organisms. This is natures way of limiting the surplus growth of prey population and to maintain a balance in ecological community. Competition is a limiting factor in which one or more same or different type of organisms compete for the same resource in an ecosystem. The one which is more competitive will derive those resources other than the one which is less competitive.
According to the given data, it is evident that the population decline in predator cheetah and lion populations because of decline in zebra population but the decline in cheetah population is more than that of lion. It explains the fact that lion is more competitive than cheetah in deriving the food which is already limited. Therefore, lion outcompete cheetah.
Which of the following statements is/are accurate? A. Horses and Mules can be bred but their offspring is typically sterile. This could be an example of hybrid breakdown.
B. One sponge species releases its gametes during the night and another species release its gametes during the day. This is an example of ecological isolation
C. One species of sea turtle mates during the early spring and a closely related species mates during late spring. This is an example of temporal isolation.
D. One species of sea urchins can not fertilize another closely related species because the eggs do not have a receptor for the sperm. This is a good example of gametic isolation.
E. Damselflies have sensory receptors that are sensitive to touch (tactile cues). Two related species of damselflies are unable to mate because their touch cues are not compatible. This is a good example of mechanical isolation.
The answer that are true are:
1) A: Horses and Mules can be bred but their offspring is typically sterile. This could be an example of hybrid breakdown.
2) C: One species of sea turtle mates during the early spring and a closely related species mates during late spring. This is an example of temporal isolation.
3) D: One species of sea urchins can not fertilize another closely related species because the eggs do not have a receptor for the sperm. This is a good example of gametic isolation.
4) E: Damselflies have sensory receptors that are sensitive to touch (tactile cues). Two related species of damselflies are unable to mate because their touch cues are not compatible. This is a good example of mechanical isolation.
Suppose you heard through various media of an animal alleged to be the hybrid of a rabbit and a cat. If the cat (Felis domesticus) has a diploid chromosome number of 30 and a rabbit (Oryctolagus cuniculus) has a diploid chromosome number of 46, what would be the expected chromosome number in the somatic tissues of this alleged hybrid?
Meiosis generates gametes that contain half the number of chromosomes of somatic cells. Therefore:
An hybrid between a cat and a rabbit would be formed from the union of a cat gamete (n=15) and a rabbit gamete (n=23) that creates a zygote that has 15+23=38 chromosomes. When the zygote divides mitotically, all its somatic cells will contain 38 chromosomes.
the atomical plane denoting the vertical field running through the body from the front to the back dividing the body into the right and left sides
If a cell loses control of gene expression, what happens? Healthy, mature cells develop.
The cell can carefully use its resources.
Abnormal, unhealthy cells develop.
The cell becomes more specialized.
Abnormal, unhealthy cells develop
Gene expression is the process through which genes are turned on through transcription, and to some extent through the translation of the mRNA.
Gene expression is highly regulated to ensure the cell can create the correct combination of proteins to carry out it's tasks. If gene expression is out of control, the mRNAs that are transcribed in the cell are not properly regulated, and therefore the proteins in the cell are not regulated. Since proteins carry out essentially every function in the cell, the cell becomes unhealthy, and incorrectly uses its resources.
Accurate control of gene expression also ensures that the cell can perform specialized functions, it is what makes a heart cell distinct from a brain cell, for example. Therefore, if it is out of control, cells will not be specialized correctly.
Abnormal, unhealthy cells develop.
1.05 Quiz: Gene Expression 2