6) In a recombinant frequency gene mapping experiment, Hfr StrS a+b+c- cells were mated with F- cells of the genotype StrR a-b- c+. Exconjugates were selected on media lacking A (compound required for growth of a- cells) and the genotypes of 1000 colonies that grew on A deficient media were determined with appropriate selective media as indicated below (show work).
Genotype Number of colonies
a+b- c+ 395
a+b- c-
a+b+c+10
a+b+c- 190
a) What is the late marker? b) What is the gene order?
c) What are the map distances between the 3 markers?

Answer: The correct answer is A.

The prokaryotic cells have an absence of a nucleus

Answer:

A. prokaryotic cells

Explanation:

it is a single called organism that lacks a nucleus

Answer:

volcanoes erupt and remove crust

Answer: the answer is C. Volcanoes erupt and remove crust

Explanation: I got it right on edge 2021

The correct answer is B) Fragmentation.

All of the options correspond to types of asexual reproduction, however fragmentation is the one in which the organism spits into many fragments.

In Binary fission the organism splits into only two new organisms.

In Budding the new organism develops from an outgrowth at one particular site of the original organism.

In Regeneration the organism replaces an injured or lost part of itself.

The Earth's systems are interconnected and constantly changing, and these changes can have significant effects on the growth of life on Earth.

In the text "Changes on Earth and Changes in Life", the author discusses how changes in the Earth's atmosphere, geosphere, hydrosphere, and biosphere have shaped the evolution of life on our planet.

One example the text provides is the impact of changes in the atmosphere on the growth of life. During the early stages of Earth's history, the atmosphere was primarily composed of carbon dioxide and methane, which made it difficult for most life forms to survive.

However, as photosynthetic organisms evolved and began to produce oxygen, the atmosphere gradually became more hospitable for other forms of life to thrive. This allowed for the evolution of more complex organisms, including animals and humans.

The text also highlights how changes in the geosphere can affect the growth of life. For example, tectonic activity can create new land masses, change sea levels, and alter the distribution of nutrients in the soil, all of which can impact the survival and growth of different species

. Additionally, volcanic eruptions can release large amounts of gases and ash into the atmosphere, which can have immediate and long-term effects on climate and ecosystems.

Finally, the text discusses the impact of changes in the hydrosphere on the growth of life. For example, changes in ocean temperatures and currents can alter the distribution of marine life, while changes in freshwater availability can affect the survival of land-based species.

Overall, the text makes it clear that changes in Earth's systems have profound effects on the growth and evolution of life on our planet. Understanding these changes is crucial for predicting how different species will respond to ongoing environmental changes, such as climate change and habitat destruction.

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Answer: c

Explanation:

Answer:

A. sexually and asexually

Explanation:

A. Sexually and Asexually

Explanation:

there is a way they can have sexual reproduction by one parent

Temperature regulation is the human condition chosen for this project. The human body must maintain a core body temperature of around 37°C, despite environmental temperature changes. The following information answers the questions:

Factors that can shift the body temperature include exposure to hot or cold environments, fever, and physical activity.

The organ systems involved in the homeostasis process of temperature regulation are the nervous and endocrine systems, as well as the integumentary (skin), cardiovascular, and respiratory systems.

Negative feedback is used to maintain temperature homeostasis. For example, when the body temperature rises, the hypothalamus signals the sweat glands to secrete sweat, which cools the skin and lowers the body temperature.

The stimulus is the change in body temperature, the receptor is the thermoreceptor in the skin or hypothalamus, the integrating center is the hypothalamus, the effector is the sweat glands or muscles, and the response is sweating or shivering.

Strategies to help maintain temperature balance include wearing appropriate clothing, using heating or cooling devices, and maintaining physical fitness through exercise.

Sources:

Guyton and Hall Textbook of Medical Physiology, 13th edition

Saladin Anatomy and Physiology, 8th edition

Tortora and Derrickson Principles of Anatomy and Physiology, 15th edition

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Answer:

mark me pls

Explanation:

Q1)When a substance is said to “dissolve” in water, it means that it is able to mix with the water molecules and form a homogeneous solution. This means that the substance is evenly distributed throughout the water and is no longer visible as a separate entity. Hydrophilic substances are able to dissolve in water because they have a strong affinity for water molecules, allowing them to form strong hydrogen bonds with them.

Q3)The hydrophilic head of the phospholipid is held in place by a combination of electrostatic and hydrogen bonding interactions with the hydrophobic tails. These interactions are strong enough to keep the head and tail together, even when the bilayer is subjected to mechanical forces.

Answer:

Bananas and Chickens are alike because they both they are both born around hot weather typically, and both bananas and Chickens get moved a lot from place to another. They both are also considired as foods/snacks to many people around the world.

Explanation:

Answer:

a. di po ko su re

Explanation:

im not sure po

The useful response in this scenario is:

It helps date the rock layer.

Graptolites are considered index fossils because they have a relatively short geological range and are found in specific time intervals. By discovering a graptolite fossil in a rock layer, scientists can use the known age of the graptolite to determine the approximate age of the rock layer.

Index fossils are valuable for relative dating and correlation of rock layers, as they provide a reference point for determining the relative ages of other fossils and rock formations.

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Answer:

D

Explanation:

1. G. fortis has a beak that is between 8 and 12 mm long.

2. G. magnirostris has an average beak depth of roughly 18 mm.

3. Judging on the size of its beak, G. magnirostris probably eats the biggest, hardest seeds.

4. It's likely that Big Birds consume seeds that are bigger than those consumed by G. fortis and smaller than those consumed by G. magnirostris.

5. In the lower right quadrant of the graph, a bird with a very long, shallow beak (like a hummingbird) would be visible.

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Answer:

A. Different species of protists do not differ greatly from one another

Answer:

country b will have high level of poverty

Some of the variables that can affect population growth are Abiotic factors such as climate, water availability, and soil nutrients can affect population growth by limiting resources,Biotic factors such as competition, predation, and disease can also influence population size.

Abiotic factors:

Climate: Temperature, rainfall, and other weather conditions can affect population growth by influencing the availability of food, water, and shelter.

Soil quality: Soil nutrients and fertility can affect the growth of plants, which in turn can influence the availability of food and habitat for animals.

Water availability: The availability of freshwater can be a limiting factor for population growth, especially in arid regions.

Sunlight: Sunlight is essential for photosynthesis, which is the process by which plants produce energy. The amount of sunlight available can affect plant growth and therefore the availability of food and habitat for animals.

Natural disasters: Natural disasters such as floods, wildfires, and hurricanes can cause significant damage to populations, affecting their ability to survive and reproduce.

Biotic factors:

Predation: Predation can significantly affect population growth by reducing the number of individuals in a population.

Competition: Competition for resources such as food, water, and habitat can affect population growth by limiting the availability of these resources.

Disease: The spread of disease can affect population growth by reducing the number of individuals in a population.

Mutualism: Mutualistic relationships between species, such as pollination and seed dispersal, can affect population growth by promoting the growth and reproduction of plants.

Parasitism: Parasites can affect population growth by reducing the health and reproduction of individuals in a population.

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Answer:

Mitosis

Explanation:

During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells.

Answer:

1. a 2. d 3. b

Explanation:

1. Changes in the atmosphere causes changes in the hydrosphere which affects the biosphere.

2. Hydrosphere, geosphere, atmosphere

3. Melting glacier provides fresh water for plants and animals.  

Answer:

Pesticides:

Weedicides:

Explanation:

if it helped u please mark me a brainliest :-))

The cell membrane's inside is hydrophobic, meaning that water won't cling to it. In order to effectively separate fluid inside the cell from fluid outside the cell, phospholipids form a two-layer cell membrane.

Large hydrophilic polar or ionic molecules find it difficult to pass through the phospholipid bilayer. The cell membrane prevents the passage of any size charged atoms or molecules.

While the tails (the lipid component) are non-polar, the heads (the phospho part) are polar. The tails, which face the inside of the cell membrane, are "hydrophobic" (fearful of water), whereas the heads, which make up the exterior and inner linings, are "hydrophilic" (lovers of water).

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The statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution (option B).

Buffer is a solution that is used to stabilize the pH (excess acidity or alkalinity) of a liquid.

Buffers operate by neutralizing any added acid (H+ ions) or base (OH- ions) to maintain the moderate pH, making them a weaker acid or base.

Therefore, it can be said that the statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution.

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General category: Biology.

Sub-category: Genetics

Topic: Molecular biology technologies

Introduction:

The Human Genome Project (HGP) was an international scientific project aiming to determine the complete sequence of human DNA and identify and map all the genes that make it up from a physical and functional point of view.

Within the human genome project, genetic tools were used that allowed and continue to enable the study of human DNA. This study had significant implications in the field of medicine because many diseases that could not be treated could now be further investigated by studying the genes involved in these diseases. Therefore, the benefits of the human genome project include the possibility of improving the diagnosis of diseases, early detection of genetic predispositions to certain diseases, drug design, gene therapy, control systems for drugs, and pharmacogenomics.

We can conclude that the correct answer is:

One of the benefits of the Human Genome Project is:

Designer drugs

Answer:

The correct answer is - The axis must be tilted at a certain angle that."  remains unchanged.

Explanation:

On the earth there ae many seasons but there are four major season, winter, summer, spring and autumn. The main reason that leads to all four season is the tilt of the sun at a specific angle that remain unchanged  which leads to change in the distance to the sun at specific time of the year which result in different rays of sun the part. So, whatever hemisphere or part tilted towards the sun leads to different season for instance:

North pole tilted towards the sun - summer in northern hemisphere

south pole tilted towards the sun -  winter in northern hemisphere

Answer:

The axis must be tilted at a certain angle that remains unchanged.

Explanation:

C on the test review. Good luck with your test/quiz/test review!

Answer:

76

Explanation:

Explanation:

Bones grow in different directions because they need to support the body in different ways. The different directions allow for flexibility and strength.