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What is the end result of crossing-over during the first stage of meiosis?

-the paternal DNA only is copied onto the chromatids
-the chromatids are identical to each other
-the chromatids contain the maternal DNA only
-the chromatids become non-sister (non-identical) chromatids

Answers

Answer 1

Answer:

The chromatids contain the maternal DNA only.

Explanation:

They must contain half the original number of chromosomes. It must contain only one chromosome in place of each homologous pair of chromosomes, so it is endowed with either the maternal or the paternal copy of each gene but not both.

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Related Questions

Solve .

A.


B.


C.


D. 64

Answers

Explanation:

i think it is d 64 bro please follow me

List and describe the cell phases that go through assuming they complete mitosis

Answers

Answer:

There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3)

Explanation:

which of he following represents a group of tissues working together to perform a specific funcion
A- Cell
B- Organ
C- Organ system
D- Organism

Answers

Answer:

B. Organ is the correct answer.

Explanation:

Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot.^_^

Organ it’s b hope this helps

What are the two main functions of carbohydrates? Select two!

Answers

Answer:

Select any of the ones below! I hope this helps! Brainliest?? Anyways have a great day!:))

Explanation:

-Providing energy and regulation of blood glucose.

-Sparing the use of proteins for energy.

-Breakdown of fatty acids and preventing ketosis.

-Biological recognition processes.

-Flavor and Sweeteners.

-Dietary fiber.

Answer:

Explanation:

Ac

Real life non examples for cell membrane

Answers

Answer:

ribosomes, the cell wall, and the cytoskeleton.

Explanation:

the influx of _______ ions initiates a neuron to fire an action potential.

Answers

Answer:

what are the choices

Explanation:

or is this typing

the lipid bilayer that forms the core of all cell membranes is composed primarily of

Answers

Answer:

phosophlipids containing a phosophate and 2 fatty acid chains connected by a glycerol molecule.

Explanation:

Phosophlipids containing the phosophate and two fatty acid chains connected by a glycerol molecule.

What is lipid?

Lipid has been defined as an organic compound which has been unable to dissolve in the water. The example of lipids are oils, waxes, hormones, and fats. The main function of the lipid is to just maintain the structure as well as components of cell membranes, storage of site of energy, and important molecule of signaling that utilised in the process of signalling.

Full form of the RNA could be ribonucleic acid and it is a nucleic acid which has been found in almost all cells that are said to be living and RNA is mostly similar to the DNA but there is a difference between RNA as well as  DNA and the difference is that the RNA is single stranded but DNA is double stranded or its structure.

The RNA's backbone has been made up of phosphate group that is arranged in alternating form and the sugar known as ribose other than the deoxyribose which is  present in DNA. There are four bases found  in the RNA and these are adenine, uracil, guanine, and cytosine.

Therefore, Phosophlipids containing the phosophate and two fatty acid chains connected by a glycerol molecule.

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tell us one way that saturated fats and unsaturated fats are different.

Answers

One difference is the number of double bonds in the fatty acid chain

The [blank] structures of the cytoskeleton would show the same patters of microtubules as a flagellum?

Answers

Answer:

I believe the answer would be cilia

Explanation:

¿Cuáles son los factores biológicos o vivos que afectan a un ecosistema?

Answers

Answer:

true

it have later than 1234567

Answer:

Translate

Explanation:


There are 2 types of crust - Continental and Oceanic.
True
False

Answers

Answer:

true

Explanation:

cuz it's true also trust me I've done my research.

Answer: True

Explanation: Earth's crust is generally divided into older, thicker continental crust and younger, denser oceanic crust. The dynamic geology of Earth's crust is informed by plate tectonics.

What crucial function do the nitrogen-fixing bacteria perform?

Answers

Answer:

microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.

Why does road salt cause changes to nearby plants?

Answers

Answer:

increasing water stress

Explanation:

The foliage on roadside vegetation is damaged when salted water sprays up from the pavement by passing vehicles. Salt-laden water can also percolate down through the soil profile, coming into contact with soil particles, soil microbes, and plant roots. Salt injures vegetation by: Increasing water stress

Please help I was supposed to have this done 2 days ago also I’ll give a lot of points for the right answers :)

Answers

Answer:

hypertonic solution=B

semipermeable membrane=D

Water level rise=F

Water level lowers=A

Solutes=C

hypotonic solution=E

Explanation:

hope that helps:)

which type of food does not contain unsaturated fatty acids

Answers

Answer:

olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans.

have a fang-tastic day <3

Foods such as olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans does not contain unsaturated fatty acid.

What is lipid ?

Lipid is defined as an organic compound which is unable to dissolve in water. The example of lipid is oils, waxes, hormones, and fats. The main function of lipid is to maintain the structure or components of cell membranes, storage site of energy, and important molecule of signaling.

Protein is defined as the large macromolecules and biomolecules that are made up of long chains of amino acid. There is various function of protein such as DNA replication, speeding up chemical reaction, and helps to maintain the structure of cell.

The main function of protein is to maintain the structure and function of organs, repair muscle, and muscles. Diet contain high protein is recommended for the purpose of losing weight, reducing fat, or increasing fat.

Therefore,Foods such as olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans does not contain unsaturated fatty acid.

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What is happening to the growth of a population in which death rate equals birthrate, but emigration is greater than immigration?

Answers

Answer:

Explanation:

A negative growth rate means it is decreasing. The two main factors affecting population growth are the birth rate (b) and death rate (d). Population growth may also be affected by people coming into the population from somewhere else (immigration, i) or leaving the population for another area. i mean

The growth of the population is decreasing.

Growth rate of the population depends upon:-

          -Birth rate

          -Death rate

          -Immigration

          -Emigration

What is emigration?Movement of organism from its residing place to another place.This generally happen because of certain factors like not suitable habitat, occupation, food, etc.

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Dealing with matter, how do producers get the nutrients they need?

Answers

They use perservatives in the food and ground

PLEASE HELP! asap !
What evidence do we have that the lithospheric plates that makeup Earth's
surface have moved?
i need 3 pieces of evidenced possible please!

Answers

Evidence from fossils, glaciers, and complementary coastlines

no links - i will report!


Which statement describes how diffusion works?


Molecules always move from inside of the cell to outside of the cell.

Molecules always move from areas of high concentration to low concentration.

Molecules always move from areas of low concentration to high concentration.

Molecules always move from of outside the cell to inside of the cell.

Answers

Answer:

2. Molecules always move from areas of high concentration to low concentration.

Explanation:

Answer:

B. Molecules always move from areas of high concentration to low concentration.

Explanation:

Trust me, this is right.

Somebody help me please

Answers

a. diaphragm

b. stage clips

c. revolving nosepiece

PLEASE ANSWER ASAP BRAINLEST IF BEST ANSWER!
Please expain what is the simple diffusion and what does it do please?

Answers

Answer:Simple diffusion is basically the diffusion of substances through a membrane without needing the help from other substances, such as proteins. An example would be carbon dioxide gas for plants.particle or substance moves from higher to lower concentration

Question 47 (2 points)
A planet is at equal distance from two stars, Star 1 and Star 2. If both stars have the same mass, (2 points)
a
they will not pull each other with a gravitational force
ооо
Ob
they will pull the planet with equal gravitational force
Ос
Star 1 will pull the planet with a greater gravitational force than Star 2
Od
Star 2 will pull the planet with a greater gravitational force than Star 1

Answers

Answer:

b

Explanation:

They will pull the planet with equal gravitational force

Particles that are far apart and can move freely is what

Answers

Answer:

a gas

Explanation:

In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

Answer:gas

Explanation:

In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

the area of the retina on which the light rays focus is the

Answers

Answer:

Lens

Explanation:

The area of the retina on which the light rays focus is the fovea, which is a small, central pit located in the retina that is responsible for vision, and there are rod and cone cells present in the human eye too.

What is the significance of the eyes?

There are several types of eyes present in the ecosystem, such as eye patterns, and the composition of the human eye is different from that of the dog and the cow, but this is the organ of vision, which allows the individual to see the world for nutrition, predation, navigation, communication, etc. Apart from that, it provides visual information about the shape, size, and color of objects and is involved in many other functions, such as the sleep-wake cycle,

Hence, the area of the retina on which the light rays focus is the fovea, which is a small, central pit located in the retina that is responsible for vision, and there are rod and cone cells present in the human eye too.

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True or False: Cellulose is a polysaccharide that functions as a structural carbohydrate

Answers

Answer:

True

Explanation:

Cellulose is a carbohydrate, meaning it can be identified as a polysacharide. It is often used by plants in the construction of a cell wall in cells. Meaning it also functions as a structural carbohydrate.

Thus, it can be thought that cellulose is a polysaccharide that functions as a structural carbohydrate.

How much of Earth is comprised of ice? (1 point)
O about 10 percent
about 30 percent
O about 90 percent
about 70 percent

Answers

Answer:

about 10%

Explanation:

Answer:

about 10% percent

Explanation: i was done with the quick check just wanted to help out?

What are the three kinds of muscle tissues? Where is each located? ​

Answers

Answer:

Cardiac, smooth, and skeletal muscle tissues.

Explanation:

Muscle tissue is classified into three types: cardiac, smooth, and skeletal. Cardiac muscle cells are found in the heart's walls, are striped (striated), and are under involuntary control. Except for the heart, smooth muscle fibers are found in the walls of hollow visceral organs (such as the liver, pancreas, and intestines), are spindle-shaped, and are similarly under involuntary control. Skeletal muscle fibers are found in muscles that are connected to the bones. They have a striated look and are controlled voluntarily.

Answer:

The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control

Explanation:

4. Some early mornings , dew drops can be found on grass or a car parked outside,
but not on other materials such as the sidewalk. Why is that?
the nighttime temperature on grass and the car went below the dew point, but
the temperature of the concrete did not drop enough to reach the dew point
level
temperature on the grass and sidewalk were both above the dew point levels all
night
the relative humidity of the air above the grass was higher than it was above the
concrete
none of the above

Answers

Dew drops can be found on grass or a car parked outside but not on other materials such as the sidewalk because; The nighttime temperature on grass and the car went below the dew point, but the temperature of the concrete did not drop enough to reach the dew point level.

Definition:

The dew point is simply defined as the temperature below which the water vapour in a given volume of air at a constant pressure will condense into liquid water.

More specifically, the dew point is the temperature at which the air is saturated with moisture.

From the definition above, it is evident that the fact that the nighttime temperature on grass and the car went lower than the dew point temperature is responsible for the condensation of water vapour on grass and the car as opposed to the case in Concrete.

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2. What is the difference between parasitic roots and mycorrhizae?​

Answers

Answer:

the main difference between the paasitic roots and mycorrhizae is that the parasitic roots are adventious roots of parasitic plants penetrating into the conducting tissue of the host plant whereas mycorrhizae r the association's between fungi and higher plants

helppppppppppppppppppppp

Answers

Answer:

The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations,

Explanation:

tysm

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