when does crossing over occur? how many chromatids are involved? how many homologous chromosomes?

Answers

Answer 1

Answer:

The normal human karyotype is made up of 46 chromosomes: ... The 2 sister chromatids are linked mainly by a paracentric heterochromatin ...

Explanation:


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Answers

Answer:

Weather: "Hurricane", "Lightening", "Tornado", "A pattern of changes happening around the world over many years", "Tells you how to dress for that day", "Heat wave", "Specific event or condition that happens over a period of hours or days", "Short Term", "A thunderstorm, a snowstorm, and today's temperature", "Include wind, temperature, humidity, atmospheric pressure, cloudiness, and precipitation", "The condition of the atmosphere at a particular place and time".

Climate: "The average weather conditions in a place over many years", "Highly variable day to day, and from one year to the next", Minneapolis is cold and snowy in the winter, while Miami's is hot and humid",  "Tells you what wardrobe to own", "Usually taken over 30 plus years",  "Annual Rainfall", "Drought", "Long Term", "Ice Age", "Determined by lattitude, bodies of water and altitude".

Explanation:

Use signal words from the passage to determine
which of the following events was caused by the
fact that the plants on the island were different
from the plants on the South American mainland.
A. Finches from South America arrived on one
of the islands.
O B. The population on the island evolved
differently from the population on the
mainland.
C. The finches that arrived on the island had
to survive in a new environment.
O D. A few finches from the island may have
flown to another island and begun the
speciation process again.

Answers

I’m not going home to get home

Reactionate
Reaction me
0
3
5
12
CH
Image Courtesy of 3DScience.com
The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph this enzyme
is minimally active between pH 5-7
O works optimally between pH 5-7
O is minimally between pH 0-3
O works optimally between pH 0-3

Answers

Answer:

is minimally active between pH 5-7

i took the test

Water that infiltrates into the ground is called ___________.
A. runoff

B. groundwater

C. precipitation

Answers

Answer: B Infiltration

Explanation: The process by which water penetrates the ground to become groundwater is called b. infiltration. Runoff is water that flows on the earth's surface after a shower of rain. This water usually flows into rivers or streams. Precipitation can occur as rainfall, snow, hail or sleet and falls from clouds when condensation occurs. Transportation is the process by which trees release water vapor into the atmosphere via stomata in the leaves.

Answer:

B-Groundwater

Explanation:

Think about it lol "Water that infiltrates into the ground" which word has ground and water in it

Correct you got it right it is "groundwater"

You are officially big brain

How does a fire help grasslands?

Choose all that apply

Answers

Answer:

In most grassland ecosystems, fire is the primary mode of decomposition

Explanation:

Grasslands burn more readily than forest and shrub ecosystems, with the fire moving through the stems and leaves of herbaceous plants and only lightly heating the underlying soil, even in cases of high intensity. In most grassland ecosystems, fire is the primary mode of decomposition, making it crucial in the recycling of nutrients. In some grassland systems, fire only became the primary mode of decomposition after the disappearance of large migratory herds of browsing or grazing megafauna driven by predator pressure. In the absence of functional communities of large migratory herds of herbivorous megafauna and attendant predators, overuse of fire to maintain grassland ecosystems may lead to excessive oxidation, loss of carbon, and desertification in susceptible climates. Some grassland ecosystems respond poorly to fire.

A fire helps grasslands through the following:

Keeps trees from overtaking the grasses.Preserve biodiversity.

What is Fire?

This is the visible aspect of combustion of fuel and other materials to produce heat and flame.

controlled burning increases biodiversity by increasing spatial and temporal variation and helps prevent trees from overtaking grasses.

Read more about Grassland fire here https://brainly.com/question/1212527

Do convection currents exist in Earth's crust?

Answers

Answer:

yes convection currents occur in earth's crust I hope this helps

yes convection exsists on earths crust.

What are the five main phases of the cell cycle? What are the main events in each?

Answers

Answer:

In the adult organism, mitosis plays a role in cell replacement, wound healing and tumour formation. Mitosis, although a continuous process, is conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase and telophase.

Cell cycle has different stages called G1, S, G2, and M. G1 is the stage where the cell is preparing to divide. To do this, it then moves into the S phase where the cell copies all the DNA.

Explanation:

good luck

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The 1st organism in a food chain must always be what type of organism?

Answers

Answer:

Producer

Explanation:

I think it should be producer.

Answer:

Producer

Explanation:

The 1st organism in a food chain must always be what type of organism?

Producer

Wave energy is a. Another name for tidal energy. C. A clean, renewable resource. B. Used around the world. D. Run by computer programs. Please select the best answer from the choices provided

Answers

Answer:

A; another name for tidal energy

Explanation:

The wave energy comes from the movement of the sea or ocean tides.

It is the energy that can be obtained from the movement of the tides of the ocean or sea.

It is the energy that we can get as a result of the rise and progression including the retraction and fall of the sea waves.

Plzzz help Why are females in control of sexual selection and the evolution of males?

Answers

Answer:

What i can say is that WE ARE NOT.

Explanation:

Sexual selection is mostly our choices bc we have the uterus and body parts to produce babies. Some men take advantage of that hence rapxe. The evolution of males is sometimes in our control bc we are trying to teach them not to rapxe.

how plants and animals get the matter they need to survive.

Answers

Answer:

Plants are able to use the energy from sunlight to produce sugars, which are a source of energy and matter. On the other hand, an animal cannot make its own food, so it eats plants and other animals.

Explanation:

Please help me!!! Timed!!

Answers

Answer:

Diploid

Explanation:

When energy is added to a wave, how can the wave change? Select all that apply

Answers

Explanation:

The amplitude can increase The frequency can increase Deceased wavelength

When energy is added to a wave, the wave changes with the following:

The frequency can increase.The wavelength can decrease.The amplitude can increase.

What do you mean by Energy?

Energy may be defined as the ability to do work. It is applied to an object to increase its velocity. It is something that defines how things change and move.

Frequency is inversely related to the wavelength and directly related to the amplitude. So, if frequency increases, the amplitude is also increased, but the wavelength decreases.

Frequency is defined as the number of peaks formed by the wave in 1 second.

Therefore, when energy is added to a wave, frequency and amplitude increase, while wavelength decrease.

To learn more about Electromagnetic waves, refer to the link:

https://brainly.com/question/25847009

What term describes the shape of a DNA molecule?
double helix
A. ladder
B. double base paired
C. double-handed
D. double helix

Answers

Answer:

D

Explanation:

The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they called a "double helix," in the journal Nature.

D. Double Helix
On edg 2021

Which of the following would not be considered evidence that supports the modern theory of evolution?
a. The embryonic structures of many organisms appear similar and they share characteristics like gills and tails during early development.
b. Fossils are discovered that show gradual changes in the physical characteristics of a species over time.
c. Analogous structures, like bird and bat wings, show us that these organisms inherited wings from a recent common ancestor.
d. DNA of organisms that are theorized to be closely related often shares a lot of similarities.

Answers

Answer:

a

Explanation:

which two layers of the atmosphere are responsible for the majority of solar radiation absorption?

Answers

Answer:

The stratosphere and thermosphere.

Explanation:

the stratosphere and the thermosphere

Which of the following describes the genetic material found in prokaryotes?

1. several large circular chromosomes and sometimes one additional small circular plasmid
2. one large linear chromosome and sometimes additional small circular plasmids
3. one large circular chromosome and sometimes additional small circular plasmids
4.several large linear chromosomes and sometimes one additional small circular plasmid

Answers

Answer:

one large circular chromosome and sometimes additional small circular plasmids.

Explanation:

How can the appearance of white baby rabbits be explained when the mother has white fur, and the father has black fur?

Answers

Answer:

white fur is dominant and the mother is WW

Explanation:

W=white fur

w=Black fur

A galaxy has less mass than a moon and more mass than a planet.
True
False

Answers

Answer:

False, major false. A galaxy is a small portion of the entire universe... it contains plants, stars, asteroids, moons are insignificant compared to it. Also, pretty much all moons are larger than planets so that wouldn't even make sense.

Answer:

FALSE

Explanation:

First off a galaxy is one of the largest things in space, besides things like galaxy clusters.

Second all planets have more mass than the moon. Since planets have more mass than a moon, it is impossible to have less mass than a moon but more than a planet.

Finally, a galaxy is made up of millions of planets and moons. So it does not make any sense nor is it even possible.

What information does the rocks tell us? List three things

Answers

What rocks? I would answer but I don’t understand the question

why does my feet smell?

Answers

u stink nvffvbhnbgvfcdrxsezawsexdrcftvybhun

Answer:

Because you stink, and it's sweaty.

Explanation:

I suggest you use a condom to scrub soap off each toe! <3

100 pt questions biol​

Answers

Answer:

1. Cellular  

2. Photosynthesis

3. Photosynthesis

4. Cellular

Explanation: B.

Answer:

Office Equipment & Supplies. Orchestrated by CDW. To ensure your business operates smoothly, you need a steady supply of office basics. Whether it's a ...

Explanation:

List 4 chordate characteristics.

Answers

Answer:

notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-an4l tail

Explanation:

had to censor second to last word but the 4 is an a

Which of the following are characteristics of
Zygomycota? Check all that apply.
D
lack reproduction phase
spores produced in basidia
spores produced in zygosporangia
important in the food industry
important in the fermentation process
can cause disease to plants
can cause disease to animals

Answers

Answer: 3- spores produced in zygosporangia

5- important in the fermentation process

Explanation:

Answer:

in the picture

Explanation:

Examine the image that shows the folds in the lining of the small intestine.
Which of the statements best describes the interaction between the small intestine and another organ based on the model shown
here?
A)
The large number of extensions allows the small intestine to filter wastes
before they are absorbed by the kidneys and liver.
B)
The large indentation in the small intestine lining allows for the storage of
food molecules before they are processed by the liver.
The increased surface area to volume ratio of the small intestine allows for
the absorption of materials into the bloodstream more efficiently.
The increased number of cells in the lining of the small intestine allows
the absorption of materials into the large interesting more efficiently.
D)

Answers

Answer:

D?

Explanation:

I took this test on Testprep but I am not sure that is the answer but I wish good luck to you

Answer: It is C.) The increased surface area to volume ratio of the small intestine allows for

the absorption of materials into the bloodstream more efficiently.

Explanation: Microvilli increases surface area of the cells

What is a type of cell that makes new bone tissue?
A. Osteoblast
B. Myosin
C. Actin
D. Cartilage

Answers

Answer:

I think the answer is going to be A. I'm not completly sure.

Explanation:

What substances are in water, and where do they come from?

Answers

Answer:

Hydrogen and Oxygen

Explanation:

They are found in the atmosphere or they exist in gaseous, liquid or solid form

The climate influences ________
A. Plant growth
B. Biodiversity
C. Adaptions of land organisms
D. All of the above

Answers

Answer:

D

Explanation:

WILL PICK BRAINEST

As the population of a city recently grew , so did the number of cars and industries in the area. The local news started to post air quality warnings. What most likely caused the need for air quality warnings?

a-AS the population grew, more people wanted to know about air quality.
b-The removal of trees led to increased soil erosion
c-The level of carbon monoxide increased as people heated their homes.
d-More cars and industry led to increased carbon dioxide and nitrogen oxide emissions.

Answers

I believe it's answer D.

I need a small text (about 50 words) for the human brain.

Answers

Answer:

The human brain is the command center for the human nervous system. It receives signals from the body's sensory organs and outputs information to the muscles. The human brain has the same basic structure as other mammal brains but is larger in relation to body size than any other brains.The largest part of the human brain is the cerebrum, which is divided into two hemispheres, according to the Mayfield Clinic. Underneath lies the brainstem, and behind that sits the cerebellum. The outermost layer of the cerebrum is the cerebral cortex, which consists of four lobes: the frontal, parietal, temporal and occipital. [Nervous System: Facts, Functions & Diseases]

Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each of these contains fluid-filled cavities called ventricles. The forebrain develops into the cerebrum and underlying structures; the midbrain becomes part of the brainstem; and the hindbrain gives rise to regions of the brainstem and the cerebellum.

Explanation:

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