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Sex determination.

Separate sex determining i.e. male and female.

In sex determination, male and female differs only through sex chromosomes i.e. x and y chromosome. x chromosome for male and y chromosome for female. Autosomes(non - reproductive cells) does not involve in sex determination. Only the sex chromosomes involve in sex determination. Overall, only this chromosomes ( x and y) decides whether the resultant baby is male or female. If it is x chromosome, then it is a female and if y chromosome, then it is a male.

Answer:

Lovejoy (1936) identified three basic intellectual components of the Great Chain of Being, which he called the principles of Plenitude, Continuity, and Gradation.

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The viruses have 3 main parts, the genetic material, the capsid, and some proteins.

in the image, we can see that inside we have the genetic material, and it is protected by the capsid. So the number 7 would be the genetic material.

and the number 9 would be glycoproteins that help the virus to recognize the target cell and allow the viruses to get in the cell, besides keeping the integrity of the genetic material.

Answer

A. used by science to be an example for how other organisms would respond to different situations

Explanation

Model organisms are a non-human species that is extensively studied to understand particular biological phenomena.

(a) The probability that they will have a cub with black fur and brown eyes is 25%

(b) The probability they will have a cub with while fur and blue eyes is 25%

(c) The phenotypic ratio is = 1:1:1:1

(d) The genotypic ratio is= 1:1:1:1

male      : Ffbb  (black fur, blue eyes)

female    : ffBb   ( white fur brown eyes)

male gametes : Fb and fb

female gametes : fB and fb

male/

female     Fb              fb

fB           FfBb            ffBb

fb            Ffbb            ffbb

FfBb          black fur brown eyes

ffBb          white fur brown eyes

Ffbb         black fur blue eyes

ffbb          white fur  blue eyes

Phenotype is defined as  observable characteristics or characteristics of an organism that are the result of the interaction of genes and environmental factors. These characteristics include physical appearance and  other characteristics that we perceive.

The phenotype of an organism includes its physiological, biochemical and behavioural characteristics. Unlike genotype, which is inherited from  parents,  phenotype is influenced by lifestyle and environmental factors. Environmental factors include temperature, nutrition, humidity and the mental health of the body.

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The reasons that humans should seek to conserve and nurture biodiversity is  each of the statements above is accurate.

Option E is correct

Genetic, species, and ecosystem diversity are the three levels of biodiversity that are most frequently discussed. The various genes found in each unique species of plants, animals, fungi, and microbes make up genetic variety. It can happen both within and between species.

It is essential to life on Earth that all living things are diverse, including ecosystems, plants, animals, their habitats, and their DNA. In addition to supplying oxygen, food, clean water, fertile soil, medicines, shelter, safety from storms and floods, a stable climate, and recreation, biodiversity is essential to human survival. Tragically, due to human civilization, biodiversity is currently vanishing at a rate 1,000 times faster than it should.

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Answer:

the statement is true

Explanation:

The main difference between active and passive transport is that in active transport, solutes are moved from an area of low to high concentration (against the concentration gradient) and requires the energy released from ATP hydrolysis

Answer:

Explanation:

During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).

Hence; your option is True

John Muir conservationist used their notoriety to advocate for the creation of Olympic National Park.

The correct option is B.

John Muir, one of the most well-known naturalists and conservationists in the country, is honored with the name Muir Woods in the Golden Gate National Recreation Area. Muir is credited with creating the Sierra Club and the National Park System.

Muir was one of eight children and was born on April 21, 1838, in Dunbar, Scotland. He enjoyed playing outside and was energetic and adventurous. According to the Sierra Club, Muir attended the neighborhood schools of that little coastal village until he was 11 years old. But the Muir family immigrated to the United States in 1849 and settled in Wisconsin.

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Question:

Tropical rainforests are very humid and get lots of rain. This leads to lush plant growth, including tall trees and large, colorful flowers. Primates, such as the orangutan pictured above, often live in tropical rainforests. Which of the following describes a characteristic that allows orangutans to live in the rainforest?

1- Orangutans have orange fur that blends in with the treetops



2-Orangutans have long limbs that allow them to climb trees easily



3-Orangutans have thick hair that helps to keep them warm.



4-Orangutans have small ears that do not get cold very easily.

Explanation:

The main physical characteristics of the orangutan are the large head, long and flexible arms, prominent mouth, and abundant fur with a very bright red-orange hue. Standing up, they can measure two meters and the males weigh up to 120 kg. The orangutan's arms are appropriate for its lifestyle because it spends most of its time (about 90 percent) in the trees of its home, the tropical rain forest. They even sleep in the heights, in nests made with leafy branches. In fact, Sumatran orangutans have long, strong arms, 1 or 1/2 times the length of their legs that enable them to move easily in the trees.

Answer: we can conclude that the correct answer is:

Celestial bodies refer to the planets, stars, moons, and other natural objects that are present in space.

Celestial bodies or holy bodies are things in space such as the sun, moon, planets, and stars. They form a bit of the vast universe we live in and are. Working Of Electric Bell in line with the Sun, Jupiter is, by far, Celestial bodies the largest planet in the solar system – more than twice as massive as all the other planets combined. Celestial bodies were usually very far from us. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets largest planet in our solar system by far is Celestial bodies Jupiter, which beats out all the other planets in both mass and volume.

so we can conclude that planets, stars, moons, and other natural objects are considered Celestial bodies.

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The answer would be 50%.

If these two genotypes mate YW x YW the result would be

YY, YW, YW, WW. The percentage of the offspring would be:

YY- yellow 25%

YW- cream 50%

WW- white 25%

The ion that is able to serve as an alternative for the hydroxyl ion is the carbonate ion. Option B

The bone is a structure that could be found in some animals. The main function of the bone is that the bone does provide support for the organism. There are about two hundred and six bones in the human body and most of them does provide support and rigidity to the human body.

The compound hydroxyapatite is found in the bone and it contains the hydroxyl ions, phosphate ions and the calcium ions which is the main ion that have been associated with the rigidity of the bone.

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Answer:1. placing it in a beaker of water

Explanation:

You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up.

Answer:

JOHNY

Explanation:

8679>889

so johny has more

Answer:

Johny has more.8679 is bigger than 889

The oldest cultivated seeds ever found were so well preserved so as to ensure that they are viable even after a long period of time.

This is referred to as the measure of the ability of the seed to remain alive and being able to reproduce in other to form a new offspring through various processes.

Seeds are grown or present under various conditions which could be harsh such as during a period of extreme hot or cold climatic conditions and there is the importance of it having to remain well preserved.

This is because it ensures that the seed is still viable and able to grown into a new plant. This is done through structures which prevents it from drying out or being influenced by other factors thereby making it the correct choice.

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The pressure exerted by or present within a liquid when it is at rest in relation to other bodies is known as hydrostatic pressure.

When a diver encounters a rise in the pressure of the surrounding water, the phrase "blood shift" is used. Due to this, the amount of blood being pumped into the chest increases.

The pressure increases significantly below 80 meters, and Néry can actually feel it in my body. He starts to truly feel like being choked.

Nery explains how he can unwind and let the water draw him deeper. This was the most fascinating to me.

The force that fluids apply against the capillary wall is known as hydrostatic pressure.

Nery explains how he can unwind and let the water to draw him deeper. I'm drawn to this because I enjoy being in the water and enjoying the serenity of the silence. The fact that our bodies may be trained to defend ourselves and mount a defense against stressors also intrigues me.

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Five uses of microbes are

Micro biome

Fungi

Pro biotics

Micro-organism

Baking

The digestive system takes nutrients from food and absorbs them. The circulatory system drives those nutrients to the rest of the body's cells. From the left to the right: blood vessels, heart, villi, digestive tract.

1. The digestive system is composed of different organs. Some of them mechanically break down ingested food, while others, through enzymatic action, take nutrients and let them available to be absorbed by the intestine. Villi increase the absorption area, enhancing the number of nutrients and water absorption. These are then driven to the rest of the body's cells

2. The circulatory system (composed of vessels, capillaries, veins, arteries, and the heart) takes those nutrients from the intestine walls and transports them together with the oxygen to different cells in the organisms where they are needed.

From the left to the right: blood vessels, heart, villi, digestive tract.

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The oldest known fossils are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. Remember that cyanobacteria are prokaryotes. Thus, we can conclude that the correct answer is:

Answer:

prokaryotes

Answer:

Drought.

Explanation:

Otters can swim + they live in the ocean

Answer:

Science fiction is a genre

Answer: B. Science Fiction is a genre.

Detroit, Michigan city had lead levels in their drinking water that was equal to what was found in Flint.

The correct option is (B) Detroit

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30S ribosomal subunit is only found in prokaryotic cells, so it would interrupt translation on bacterial cells (prokaryotic) but not in human cells (eukaryotic).

Answer:

1, epidemiology

Answer:

1) epidemiology

Explanation:

1) epidemiology

Isotonic, hypertonic, and hypotonic refers to the concentration of solutes present in a solution in comparison to another solution.

In this case, they refer to a solution that surrounds animal cells.

When a solution is isotonic, it means that has the same concentration as the other, in this case, the cytosol of the cell, so there is no water flow across the cell membrane.

When the solution is hypotonic, water diffuses to the interior of the cell, which has a greater concentration of solutes, and in an animal cell this can cause the rupture of the cell, in opposition to what would happen in a plant cell, where the cell wall prevents this from happening.

And in the case of a hypertonic solution, as the concentration of solutes is greater outside the cell, the water leaves the cell.

This means that, from the options, a hypotonic solution can be more harmful to an animal cell (option C).

Among the vaccines administered in the U.S., the recommended choice of the Centers for Disease and Prevention (CDC) are Pfizer-BioNTech or Moderna vaccines. Suggestions for a mix-and-match approach allows preference on a different vaccine for booster than the one administered to them.

Answer:

A point has no dimension and a line has one dimension.

Explanation: