A crossover in meiosis is an exchange of genetic material between
A) sister chromatids of the same chromosome.
B) sister chromatids of homologous chromosomes.
C) sister chromatids of non-homologous chromosomes.
D) non-sister chromatids of homologous chromosomes.
E) non-sister chromatids of non-homologous chromosomes. ✓
During meiosis, the two chromosomes in each parent,swipe their place resulting in a hybrid new genetic material2.A tetrad is made up of
A) four non-homologous chromosomes.
B) four non-homologous chromatids.
C) four homologous pairs of chromosomes.
D) two homologous pairs of chromosomes.
E) two homologous chromosomes, each consisting of two chromatids. ✓
Tetrad is a group of four chromatids formed in pachytene stage of meiosis3. Which of the following statements about crossing over is TRUE?
A) It occurs only in males.
B) It occurs only in some chromosomes.
C) It occurs only between genes that are heterozygous.
D) It results in reduced genetic variation among gametes.
E) None of the above ✓
The process of crossing over takes place between homologous chromosomes to increase genetic diversity4.Crossing-over occurs during prophase I of meiosis.
A) True ✓
B) False
crossing over helps in genetic variation and occurrs between prophase 1 & metaphase 15. Crossing-over allows the reassortment of linked genes.
A) True ✓
B) False
Crossing over helps in the reassortment of non-sister chromatids of non-homologous chromosomesCrossing over may be defined as the process through which the exchange of genetic material between homologous chromosomes takes place that results in the mixture of parental characteristics in the offspring.
According to the context of this question, the process of crossing over takes place during the Pachytene stage of meiosis which significantly involves the reassortment of linked genes.
Therefore, each of the given questions is well answered above.
To learn more about Crossing over, refer to the link:
https://brainly.com/question/927405
#SPJ2
I’m confused with this question
I have many questions for my hw
Here are all the facts:
A girl, lets call her Grace, is wondering which pet she should get. she has owned a betta fish before, and has done a lot of research for hermit crabs. But here are some things she doesn't know:
1. Which one is easier to care for? Betta fish or hermit crab
2. Will a hermit crab be ok in a five 1/2 gallon tank?
3. Is it ok if she just gets one hermit crab or should she get multiple?
4. And ultimately, which one should she get, hermit crab or betta fish?
The last one is the most important. Thanks!
Answer:
1. Betta Fish
2. Yes. Choose a terrarium that has at least 5 gallons of space per 2 crabs.
3. They require companionship! Hermit crabs, despite their name, are social creatures that thrive best in groups of two or more.
4. Both are entertaining, but I prefer betta. Hermit crabs, in my experience, are extremely sensitive and difficult to keep alive. Hermit crabs proved to be much more difficult than I anticipated, but bettas are a little more straightforward. That is just my opinion; I am sure you will do fantastic with whatever you choose.
I hope this helps you
:)
hich of the following have questions that cannot have a definite answer?
a.
Art
b.
Science
c.
Religion
d.
Philosophy
e.
B and A
f.
C and B
g.
A, C, D
h.
B, D, A
Diseases causing toxins are produced by
A. Viruses
B. Protists
C. Bacteria
D. Fungi
Answer:
protists is correct answer kids.so do it
Which organ of the body is responsible for water absorption *
Liver
Heart
Kidneys
Gonads
Answer:
Technically, it's the kidneys, but if it's also with the digestive system, it would be the large intestine. However, this is not that type of question, so it would be the kidneys.
Explanation:
The gravitational force exertedThe gravitational force exerted by an object depends on its by an object depends on its
Answer: The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.
Explanation:
Answer:
Explanation:
The pressure that a particular object exerts on the floor depends on the gravitational force, F, and the area of its base, according to the equation.
Pressure =Fπr2
What is the shape of the area of the base of the object?
Responses
Can you help me with this question!!!
How does a bud become a leaf or flower?
Which of the following is NOT part of Darwin’s theory of natural selection?
Each species produces more offspring than will survive to reproduce.
Individuals within a population have slightly different traits.
Individuals within a population compete with each other for limited resources.
Individuals that are better equipped to live in an environment are more likely to survive and reproduce.
ALL of the above are part of Darwin’s theory of natural selection.
Answer:
Suitable variations in a population tend to be passed on while unsuitable variations in a population are not.
Explanation:
mark me brainliest!!
Why are hooves more advantageous for horses in the modern era? (1 point)
O Hooves are better suited for environments with a wider range of vegetation,
o O Hooves are better suited for environments with plenty of trees.
O Hooves are better equipped for environments with plains.
Hooves are better suited with environments with wetter climates.
Answer:
O Hooves are better equipped for environments with plains.
Explanation:
I took the test.
Also, hooves help horses run faster.
Answer:
(Q1) In order for a trait to be considered a competitive advantage, the trait must
(answer) allow the individual to survive better and reproduce more in that environment.
(Q2) Why are hooves more advantageous for horses in the modern era?
(answer) Hooves are better equipped for environments with plains.
(Q3)Imagine a major volcanic eruption has dramatically changed the environment on an island such that the average temperature and available sunlight are much lower. Of the following species present on that island, which species is most likely to adapt and evolve to this change instead of going extinct?
(answer) an insect species with a high reproduction rates and a significant mutation rate
(Q4) Of the four factors that affect the evolution of species, which factor is driven by random events?
(answer) Genetic variation
(Q5) Which factor will most likely guarantee evolution rather than extinction?
(answer) higher reproduction rates
Explanation:
i just finished the quick check UwU hope this helps <3
Answer these three questions to summarize what you have done in this project.
1. How did you model mutations in this project?
2. How are the three mutated strands similar to each other? (Hint: Think about the type of mutations modeled.)
3. How are the three mutated strands different from each other?
A mutation means an alteration in the nucleotide sequence of the genome of an organism.
What is mutation?Your information is incomplete. Therefore, an overview will be given. A mutation is a change in a DNA sequence.
Mutations can be from DNA copying mistakes that are made during cell division, the exposure to ionizing radiation, and exposure to chemicals called mutagens.
There are three types of DNA mutations which are base substitutions, deletions, and insertions.
Learn more about mutations on:
https://brainly.com/question/17031191
How are you feeling now?
Answer:
annoyed
Explanation:
i need help on my posted questions
How does a nerve signal travel?
Molecules signaling through plasmodesmata.
An electrical signal traveling as a wave.
Molecules signaling through gap junctions.
Pheromone signal traveling between organisms.
Nerve signal travel by molecules signaling through gap junctions
A nerve impulse begins when a neuron receives a chemical stimulus. The nerve impulse then travels down the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that carry the nerve impulse to the next
Answer molecules signaling through gap junctions
Explanation:
i took the test
which of the 4 macromolecules consist of a variety of units and can be divided into 2 classes?? Helpp!!
Answer:
The 4 macromolecules are nucleic acids, carbohydrates, proteins, and lipids.
Structure: Carbohydrates, lipid, and protein
Function: Nucleic acids, Carbohydrates, Lipid, and Protein
Explanation:
Describe three causes of chemical weathering
Earth Science.
Answer:
THE CAUSE OF CHEMICAL WEATHERING ARE CHEMICAL REACTIONS SUCH AS IXIDATION,CARBONATION,HYRDOLYSIS,AND ACID BASE REACTIONS.HOPE IT HELPS.
Diurnal are common orchids found in Australia the flowers of this species display a large number of varieties in color and makings insects rely on the ability to learn the specific colors and markings of unfavorable flowers to avoid them in the future.
Answer:
A
Explanation:
Which structures are most similar in birds and mammals based on their functions?
air sacs in birds and rib cages in mammals
air sacs in birds and mammary glands in mammals
gizzards in birds and teeth in mammals
crops in birds and teeth in mammals
Answer:
C: gizzards in birds and teeth in mammals
Explanation:
when did dinos die? when tell me please
Answer:
65 Million years ago
Explanation:
I looked it up
Answer:
65 million years ago during the Jurassic and Triassic eras, a giant meteor struck what would be earth, and we had to start all over again. Here we are 65 million years later.
I hope this helps! Have a wonderful day.
Emma made the following list to describe one of the weather components: It gets lower as you go higher. You can feel it on an airplane. It is usually higher when the weather is calm. It is related to weight. Which weather component is Emma describing?
Air pressure
Air temperature
Humidity
Precipitation
Answer:
Air Pressure
Explanation:
Air pressure is the only option here related to weight. And Air Pressure does get lower the higher the airplane goes.
Answer:
Air Pressure
Explanation:
I did the test. Hope this helps!
[tex]{ \\ what \: is \: dna \: \: \: \: }[/tex]
..................
Answer:
DNA = Deoxyribo Nucleic Acid .
Answer:
Deoxyribonucleic acidIt is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid (RNA) are nucleic acids. Alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macromolecules that are essential for all known forms of life.
Brainliest pleasehave a good day
Question 9 of 10
Which three plates touch the South American plate?
Answer:
South American plate is bounded by African plate in the east, Nazca plate in the west, Antarctic plate and Scotia plate in the south, and Caribbean plate and North American plate in the north.
Explanation:
Classify each action as a cause or an effect of climate change.
Answer:
Hope the below helps!
Explanation:
Cause:
Fossil fuels burn
Cities become more industrialised
Human population grows worldwide
Effect:
Glaciers melt
Climate changes
Rain falls in unusual amounts
To know the difference, you have to think about what might create changes. E.g. Human population grows worldwide, so each person has a carbon footprint, releasing more carbon emissions into the atmosphere. This means that the climate changes!
Female sea turtles prefer to lay their eggs on dark, sandy beaches. Once the eggs hatch, the turtle young use the light of the moon to guide them to the ocean. They must enter the ocean quickly in order to find food and avoid the many predators that can locate them on the beach.
As more homes and businesses are built along the coastline, the sea turtles become more threatened. Which of the following types of pollutions from homes and businesses would have the greatest impact on sea turtles finding their way to the ocean?
A.
noise
B.
light
C.
air
D.
water
answer
B.
light
Answer: Yes, the correct answer is B: Light.
Explanation: When baby turtles hatch from their eggs on the sand at night, they rely on the moonlight and its reflection on the water to guide them towards the water. With houses and new buildings being built along the shoreline, the new hatchlings get confused and can tend to follow the bright lights of the houses and buildings instead of the moonlight, putting them in danger of many different harmful things.
HELLLLLLP
Which lobe of the brain is associated with speech, hearing, and memory skills?
Temporal
Occipital
Parietal
Frontal
Answer:
The frontal lobe
Explanation:
The frontal lobes are important for voluntary movement, expressive language and for managing higher level executive functions. hope this helps!
Answer:
The Temporal Lobe is responsible for speech, hearing, and memory skills.
__________________________________________________________
Please mark me as Brainliest, rate my answer, and say thank you :)
Ya'll I need serious help give a brotha sum help
What would create more genetic variation: only independent assortment (round 1 and 2) or a combination of crossing over and independent assortment (round 3)?
Answer:
A combination of crossing over and independent assortment (round 3)
Explanation:
:)
1. A crossover without sister chromatid cohesion can facilitate chromosome segregation.
a. True
b. False
2. There are more noncrossovers than crossovers during meiosis.
a. True
b. False
3. True/False Crossovers exchange large portions of chromosomes but noncrossovers exchange small segments.
a. True
b. False
Answer: 1b 2a 3a
Explanation: Mark me as brainiest!
A survey was conducted to estimate the population of barnacles (figure 1) in two coastal areas (i.e. A and B). The dimension of coastal area ‘A’ is around 20 m and 26 m. The dimension of coastal area ‘B’ is around 14 m and 15 m
Sampling in both areas was conducted using 1 x 1 m quadrat. Six quadrats were sampled randomly in each area. The numbers of barnacles in each quadrat as the following.
Area Q1 Q2 Q3 Q4 Q5 Q6
A 2 1 3 1 4 2
B 12 11 5 3 6 2
1. Calculate the estimated population of barnacles in both areas A and B. Please show the details of calculations. [5]
2. Discuss your findings. [5]
Based on the data provided;
Estimated population of Barnacles in A is 1128 BarnaclesEstimated population of Barnacles in A is 1365 Barnacles the population density of Barnacles in B is greater than that in A.What is a population density?Population density is the number of organisms per unit area of a given geographical area or location.
Population density gives an idea of how densely or sparsely populated a given area is.
Population density = number of organisms/area of land.The area of quadrant = 1 m × 1 m = 1 m^2
Total number of Barnacles in 6 quadrant sample A = 13
Average = 2.17
Population density = 2.17/1m^2 = 2.17 /m^2
Total number of Barnacles in 6 quadrant sample B = 39
Average = 6.5
Population density = 6.5/1m^2 = 6.5 /m^2
Area of A = 20 m × 26 m = 520 m^2
Estimated population of A = 520 m^2 × 2.17 /m^2
Estimated population of Barnacles in A = 1128 Barnacles
Area of B = 14 m × 15 m = 210 m^2
Estimated population of Barnacles in B = 210 m^2 × 6.5 /m^2
Estimated population of Barnacles in B = 1365 Barnacles
From the above results, the population density of Barnacles in B is greater than that in A.
Learn more about population density at: https://brainly.com/question/16894337
Metaphase I :
Centromeres of the chromosomes line up on the equator. What do the spindle fibers attach to?
Answer:
They attach at the kinetochore. Which can be a disk or a protein.
A certain elements has 6 protons in its atom one atom of this element needs blank electrons in order to have no net charge
Which statement is true?
Question 7 options:
Osmosis is the movement of gases, such as oxygen and carbon dioxide. Diffusion is the movement of water.
Diffusion is the movement from areas of high concentration to areas of low concentration. Osmosis is a type of simple diffusion.
Both osmosis and diffusion must occur through a semipermeable membrane.
Diffusion requires the use of energy, but osmosis does not.
Answer:
D.
Explanation:
because it's reaction is sfrantaneous
13. Which is needed for breaking down food molecules in cells after digestion has occurred?
Answer:
bile
Explanation:
stomach acid or lactic acidosis
Thanks please give brainliest
Hello user 1
Explanation:
2.0 ok baby girl