Meiosis generates gametes for sexual reproduction. The mixing of the blue * 1 point
and red chromosomes in the model below demonstrates a process known
as crossing over. Crossing over occurs during prophase 1 of meiosis.
Complete the statement based on the image of meiosis. "Crossing over is
the exchange of genetic material between homologous pairs of
chromosomes. This process.
the variation in the resulting
gametes because each contains.
material."
(11₂1)
4
5
Interphase
Homologous
Chromosomes
O increases, identical
O increases, different
O decreases, identical
decreases, different
Melosis I
Daughter
Nuclei
Daughter
Nuclei
(HH)
88-00
Meiosis II
versions of the original genetic

The control is the source of the water.

The control of an experiment is the factor that must be held constant in order for the experiment to be reliable. If these factors are not held constant, then the experimental results are not reliable.

In this case, we are measuring the effect of addition of salt to the density of water. We have to ensure that the water is all taken from the same source so that we can be sure that the density is only affected by the addition of the salt and not other extraneous factors.

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True, Enzymes can be used over and over in a reaction. They are not used up.

Enzymes only catalyze the chemical reaction in forward or backward direction

Enzymes may be utilized again to speed up the same process since they don't become damaged or depleted during the reactions they catalyze. Enzymes are incredibly efficient because each one is very specialized for the chemical process it catalyzes.

A biological catalyst called an enzyme is usually always a protein. It accelerates a certain chemical process in the cell.

The Enzyme efficiency increase with increase in temperature, but at a certain point it start declining it's activity with increase in temperature which ultimately cause the denaturation of enzyme.

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If the change in composition takes place then it is chemical change, and if the composition is not changes then it is physical change.

What is physical change?

Physical alterations are those that change the form but not the chemical composition of a thing. Physical changes can be used to separate mixtures into their constituent compounds, although they typically cannot separate compounds into chemical components or smaller molecules.

The composition must not be changed by physical adjustments; only the display must change.

Chemical alteration from the original components causes one or more compounds to totally change in composition.

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Question is incomplete;

The FALSE statement about properties of Life is:

All organisms have the ability to maintain a constant internal temperature.

The claim that all living things have the capacity to maintain a constant internal temperature is FALSE

Different stimuli, such as light, heat, mechanical contact, etc., can cause an organism to react.

Energy is needed by organisms to carry out their metabolic processes (e.g., growth, differentiation, reproduction, etc)

Animals with cold blood, or poikilotherms, are unable to maintain a consistent body temperature regardless of the outside temperature.

Fish, insects, worms, amphibians, and reptiles are examples of poikilothermic animals.

The ability of all creatures to keep a constant internal temperature is, therefore, a FALSE assertion

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A chloroplast, are you? Because of you, my brain is full of chlorophyll.

Photosynthesis, the process by which light energy is transformed into chemical energy and results in the generation of oxygen and energy-rich organic compounds, takes place in the chloroplast, a structure found inside the cells of plants and green algae. Close cousins of chloroplasts that are free-living are photosynthetic cyanobacteria; according to the endosymbiotic theory, these organisms are the ancestors of both chloroplasts and mitochondria, which are eukaryotic cells' energy-producing organelles.

The chloroplast genome is typically 120–200 kilobases long and circular (although linear variants have also been seen). A growing number of chloroplast genes have been transferred to the genome in the cell nucleus over the course of evolution, significantly shrinking the size of the contemporary chloroplast genome. As a result, nuclear DNA-encoded proteins are now required for the proper operation of chloroplasts.

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A slightly positive charge on hydrogen and a slightly negative charge on oxygen, contributing to the properties of water of attraction.

Polarity Of Water:

The one oxygen atom and the two hydrogen atoms which are present in a water molecule "H2O" form a polar covalent bond. There is no net charge on water molecule, the polarity of water molecule creates a partial positive charge on Hydrogen and partial negative charge on Oxygen which helps for contributing the attraction force.

Electronegativity Of Water:

A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen. Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds.

So we can conclude that a slightly positive charge on hydrogen and a slightly negative charge on oxygen, contributing to water's properties of attraction.

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Answer:

The answer is A it is a statement of fact

Explanation:

Law is something that is universal at all times every where thats why it can be referred to as universal law.

Answer:

down below

Explanation:

A model is a smaller representation of a phenomenon in our universe.

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Answer: If a rabbit lives in a temperate forest an adaptation would be the ability to change color when snow falls.

Explanation:

If a rabbit lives in a temperate forest an adaptation would be the ability to change color when snow falls.

The Habitat change can change the affect the heredity of the population by increasing the isolation and decreasing the effective of the population size. The Given statement has been related to the environment and heredity connection.

As per the question the rabbits lived in a forest habitat have varied coat colors such as brown, white and black. When habitat changed from forest to snow, the coat color which best suited for rabbits is Color White.

Temperature has a factor that alters the characteristics of the animals in terms of the movements and others. Rabbits that live in the temperate forests usually live underground to minimize exposure to harsh sun. This changes the way they acquire food, mate and live in general.

Therefore, option B is correct.

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The sheep carrying out respiration is the correct answer.

Therefore, option A. is correct.

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Kilogram or Kg is a measurement of Mass.

A physical body's overall composition is measured by its mass. It also measures the body's inertia, or resistance to acceleration in the presence of a net force. The mass of a thing also affects how strongly it attracts other bodies through gravity.

In the SI, the kilogram serves as the basic mass unit (kg). Mass is not the same as weight in physics, despite the fact that weight is commonly determined to use a spring balance instead of a balancing scale and compared directly with known masses.

An object may weigh less than it does on Earth while retaining the same mass due to the reduced gravity on the Moon. This is true because weight is a force, whereas mass is a property.

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The greatest competition would most likely occur if grasshoppers and impalas were decreased. Thus, the correct option is B.

Competition occurs between different species when individuals of different species struggle to obtain the same resource in an ecosystem such as food or space. Adaptations are the physical and behavior modifications which can help an organism outcompete its competitors.

Impalas are the medium-sized antelopes that roam the savanna and light woodlands of eastern and southern Africa. They are similar to grasshoppers. A decrease in the organisms of grasshoppers and impalas may result into greatest competition in the food web.

Therefore, the correct option is B.

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The Crawfish is 400 times larger than the human oocyte.

It should be noted that the radius is given as 1mm.

The surface area is also illustrated as 4πr². The surface area will then be:

= 4 × 3.14 × (1)²

= 4 × 3.14 × 1

= 12.56mm²

The radius of human = 0.05m

The surface area is also illustrated as 4πr². The surface area will then be:

= 4 × 3.14 × (0.05)²

= 4 × 3.14 × 0.0025

= 0.0314mm²

The ratio will be:

= Crawfish / Human

= 12.56 / 0.0314

= 400

In conclusion, the crawfish is 400 times larger than the human oocyte.

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Answer:

Hypotheses are so important to controlled experiments because they are testable explanations for a set of observations.

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Hope this helps!

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