The homologous chromosome pairs, also known as bivalents or tetrads, line up along the metaphase plate in a random order during metaphase I of meiosis I.
They are known as homologous pairs of chromosomes. When homologous chromosomes line up next to one another during meiosis, they create a tetrad. Two homologous chromosomes make into a tetrad, which has four sister chromatids altogether and is held together by a feature known as the chiasmata. When two homologous chromosomes that have already duplicated their DNA link up, they form a tetrad. The main distinction is that a tetrad consists of two homologous chromosomes that resemble an X rather than an I. A pair of two chromosomes, usually one from the mother and one from the father.
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In the 19th century, the agricultural revolution increased food production while the industrial revolution improved methods of
transporting food and other good additionally, advances in medicine, sanitation and nutrition have decreased the death rates further.
These factors combined to produce the rapid growth of the human population today. Yet other factors impact population demographics:
they include economic, political, religious conditions as well as resource availability.
Consider the demographics for two countries: one with a low-income, almost impoverished population; they other an economically well-off
country. What factors listed would contribute to the decline in birth rate and the larger +75 population in the high income country? Check all
that might apply.
Females have access to educational resources
Better nutrition: increased food supplies and distribution
There has been widespread emigration during the last few decades
Inadequate health care for women during pregnancy and for their babies after birth
A high incidence of infectious disease
Good sanitation and personal hygiene
Answer:
A Low Income Impoverished Population could be Uganda and a Economic Well off country could be the Netherlands
Explanation:
10. What is the net force?
5 N
5 N
5N
Answer:
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.
Answer:
Formula of Net Force
FN is the force acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.
https://byjus.com/net-force-formula/
will help you out here
Explanation:
help!
look at photo to answer
Asap i need help pls
Answer:
The right answer is C
Explanation:
Answer:
C
Explanation:
Because in ecosystem 1, the animals that eat insects have more sources of food than just insects, so that ecosystem would surive if the insects were to decline since the animals dont depend on JUST insects to surive
Think of a forest ecosystem. List two biotic factors that compete for the same abiotic factor.
Explanation:
Plants, animals.
They both require/need water, therefore, they both compete for water.
Chyangras are only farmed in cold regions. Give reasons.
Answer:
hope this helps
Explanation:
Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. That is why they are farmed only in cold regions.
Who are Chyangra Goats?Chyangra goat is a type of famous breed of mountain goats which is found in the high altitude areas of the Himalayan region. It produces the world's most expensive and finest quality of luxurious cashmere wool. It is also used for meat. They are more famous for the development of the world famous pashmina wool industry in Nepal and India.
Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. The specialty of pashmina is that it can retain enough heat to protect the animal from the severe cold and strong wind of the high mountains all year round.
Thus, Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. That is why they are farmed only in cold regions.
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What is meant by nucleoid?
Answer:
The nucleoid is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material.
How is the Greenpeace organization monitoring the situation with ozone?
Answer:
By reducing the emission of CFC's gases.
Explanation:
The Greenpeace organization monitoring the situation with ozone by reducing the emission of CFC's gases that causes depletion of ozone layers. This organization reduces the use of fossil fuels and promoting renewable energy in order to prevent changes in the climate. The Greenpeace organization ensures the use of those machines which can't produce CFCs and HFCs because one chlorine which is present in these gases destroys 100000 ozone molecules.
Can anyone one helps me to fill in the 3 blanks with herbivore and carnivore and scavenger
Help!!
Answer: The kangaroo is a herbivore , the ants are scavengers and what I think is an ant eater is the carnivore.
Explanation:
What is the relationship between a chromosome and DNA?
Chromosomes manufacture DNA.
Chromosomes are made of DNA.
DNA is made of chromosomes.
DNA manufactures chromosomes.
Answer:
(B) Chromosomes are made of DNA.
Explanation:
i took the test <3
Chromosomes are made of DNA which shows the relationship between a chromosome and DNA. So, the correct option is B.
What are Chromosomes?A chromosome is indeed a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibres in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule. Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure. The fact that DNA is a component of chromosomes demonstrates the connection between chromosomes and DNA.
Therefore, the correct option is B.
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How does RNA polymerase determine which strand is the template/antisense strand?
Answer:
Although RNA polymerase must recognize sequences on the template strand, by convention we draw the DNA sequence and regulatory signals on the "mRNA-like" strand. (This makes it simpler to directly determine the sequence of the resulting RNA.) The upper strand of DNA is the "mRNA-like" strand.
I hoped this helped out!^^
Bio homework help
pedigrees
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How many molecules are there
Answer:
about 129-130
Explanation:
Which of the following do genes NOT do?
А
provide instructions for how a person grows
B
control how a person looks
C
decide whether or not a baby is born
D
get passed down from parents to children
Answer:
c.) decide whether or not a baby is born
Explanation:
I hope this helped you:)
Students from a high school science class visited the desert of Southern California and investigated a sample of
sedimentary rock from the region.
Which question can they answer through scientific
investigation?
O Which fossils are found in different layers of sedimentary rock?
Why are sedimentary rocks prettier than other kinds of rocks?
Which layers of a sedimentary rock have the most interesting fossils?
- Why should scientists study sedimentary rocks?
Answer:
Which fossils are found in different layers of sedimentary rock?
Explanation:
Thats the answer i hope it helped! :)
Answer:
Which fossils are found in different layers of sedimentary rock?
Explanation:
Which fossils are found in different layers of sedimentary rock?
An aquifer that allows groundwater recharge is known as?
A)
unconfined aquifer
B)
confined aquifer
C)
saturated aquifer
D)
unsaturated aquifer
Answer:
b. unconfined aquifer
Explanation:
edge 2021
Self-pollination is when the pollen from one plant lands on the stigma in the same plant. What do you think the other type of pollination is called?________
(hint: This is where the pollen from one plant lands on the stigma of a different plant.)
A. asexual reproduction
B. vegetative reproduction
C. agriculture
D. dormancy
E. cross-pollination
Answer:
E.. Cross-pollination
Answer:
E. cross-pollination
Explanation:
What do you think the other type of pollination is called cross-pollination
3. The air you breath in provides _____________________ for your cells
Answer:
Energy
Explanation:
Cells use the oxygen that you breathe in to provide energy for themselves.
Answer:
Energy
Explanation:
it's provides energy to enable the taking place of all living processes that occur in the cell
A hurricane hits a coastal prairie and destroys the habitat. Years later, there is an appearance of small plants with rapidly spreading roots. This is an example of- *
Answer:
Secondary succession
Explanation:
Answer:
microhabitat
Explanation:
Years later there is an appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes. This vegetation describes— A a microhabitat
The question is which ecosystem would be more likely to survive if a disease killed the grasses
Please help me I beg you
Answer:
I believe the answer is 3
Explanation:
The symbol below represents a______
. It is usually associated with______
O Warm Front, warm and moist weather
Occluded front, a mixture of warm and cool weather
Stationary front, days of precipitation
Answer:
Occluded front, a mixture of warm and cool weather
Explanation:
The most dangerous property of cancer cells is that they:
1. divide slowly
2. spread throughout the body
3. do not divide by mitosis
4. do not live very long
Yellowstone National Park is located on top of a large active volcano. Heat rising from the underground magma chamber of the volcano fuels unique ecosystems within the park's geysers, hot
springs, and mud spots. If the volcano were to become inactive, the stability of ecosystems in the park's thermal features would
A decrease
B. increase.
С
decrease, then increase
D. increase, then decrease.
Answer: A
Explanation:
Decrease, Btw if I'm wrong I'm sry lol
But I think it's A
Can someone please help me answer this question? Thank you.
Answer:
The correct answer is -
C is parent cell
A is under meiosis
B is a sex cell
Explanation:
In the given question, the diagram shows three different cells in which the cell C is the parent cell that is about to undergo meiosis that can be identified by the quantity or numbers of chromosomes present in the cell which is highest among all.
The cell that is already in the meiosis is cell A, it is the cell that is produced after meiosis 1 in the meiosis cell division as it has half number of chromosomes to parent cells.
The sex cell or gamete is cell C that has a haploid number of chromosomes which makes this process reduction division
Bio homework help
pedigrees
had to reupload because of bots
NO ANSWERS THAT REQUIRE ME TO OPEN A FILE OF DOWNLOAD. NO FILES AT ALL!!!!!!!!!!!!!!!!
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What are the factors you see that contribute to the presence of spores in your chosen area?
Answer: The most important factors that contribute to the spore resistance properties are the low water content (25–60% of wet weight), elevated levels dipicolonic acid (DPA) (25% of core dry weight) chelated with calcium (Ca-DPA) and the saturation of DNA with α/β-type small acid soluble proteins (SASP) [69].
Explanation:
Which statement best contrasts the urinary and excretory systems?
The urinary system filters waste for nutrients, while the excretory system has no filter,
The urinary system removes liquid waste, while the excretory system removes solid waste.
The urinary system includes the bladder, while the excretory system does not.
The urinary system is involuntary, while the excretory systenris voluntary.
Answer:
The urinary system removes liquid waste, while the excretory system removes solid waste.
Explanation:
If a researcher only wanted to examine the relationship between exercise and grade point average,
to test the variables.
The complete question is as follows:
If a researcher only wanted to examine the relationship between exercise and grade point average, _________ would be used to test the variables.
A. correlation analysis
B. regression
C. hypothesis
D. central tendency measures
Answer:
The correct answer would be - A. correlation analysis.
Explanation:
To find the relationship between two variables the correlation analysis is the statistical method is used. It is used to find the what and how the one variable is related to the other variable in this method.
It is used to evaluate the relationship between any two quantitative variables.To examine the relationship between exercise and grade point average,b this method would be best as it also shows how strong is the relationship of variables.
Can a person with Rh-blood safely receive blood from either Rh+ or Rh-blood?
Answer:
Yes
Explanation:
Since the person already has Rh in their blood, it does not matter whether the donated blood is Rh+ or Rh-. getting Rh- blood for a Rh+ person is not harmful, unlike when it is vice versa.
Hope this helps :)
why won't ocean plants thrive in fresh water
Answer:
The salt doesn't flow into the cells much and the water doesn't leave much. Algae and plants can get away with having water attracted into their cells because they have a rigid cell wall outside the delicate cell membrane.
Answer:
the amount of salt in ocean water vs fresh water
Explanation: