Answer:
La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.
Explanation:
Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).
74. As layer upon layer of sediments are deposited, the process of the presses them
together.
Answer:
GO GET BOY
Explanation:
According to Charles Darwin theory of natural selection
the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D
Answer:
C or D
Explanation:
the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D
Why do organisms die if they do not have enough water?
Answer:
Organisms need water for the following activities: (1) All cellular processes occur due to water. (2) Transportation of substances in our body takes place by dissolving in water. (3) Terrestrial animals require fresh water for transportation of minerals and for getting rid of waste from their body.
Explanation:
Without water they cant do any of this.
Answer:
Cells will lose water and the chemical reactions take place in water. Without enough water, this can't happen.Explanation:
Which of the following is a 5-carbon sugar?
Glucose
Fructose
Ribose
Sucrose
Answer:
ribose
Explanation:
Answer:
Ribose & deoxyribose sugars. Ribose is a single-ring pentose [5-Carbon] sugar.
Which of the following scenarios will decrease the genetic variation of a population?
Answer:
population of birds suddenly decrease their frequency of sexual reproduction.
Explanation:
This is the answer to quiz accordingly.
The evolutionary species concept defines a species as: A. a group of populations that have shared a past and will have a shared future B. reproductively isolated populations C. smallest monophyletic taxa D. morphologically similar populations
Answer:
The correct option is A.
group of populations that have shared a past and will have a shared future
Explanation:
This is because evolutionary species concept is a concept that indicate a form of ancestry descendants or lineage of populations that descend from the same ancestors possessing similar characteristics which were inherited from the ancestry and these traits are evident in the future.
land where it is possible to grow crops is called
A.organic land
B.agricultural land
C.vegetative land
D.All of the above
Natural selection will only lead to evolution if it allows for an organism to ________.
a. possess advantageous traits.
b. compete for resources.
c. produce offspring.
d. all of the above.
Answer:
b
Explanation:
Natural selection will only lead to evolution if it allows for an organism to process traits, compete for resources and produce offspring. The correct option is d.
What is natural selection?Natural selection is indeed an evolutionary mechanism. Lifeforms which are better adapted to their surroundings are much more likely to flourish and pass on the genetic traits that helped them thrive. Species change and diverge as a result of this process.
Natural selection, Darwin proposed, is a framework for evolution in which genetic variants that help support life, reproduce and survive as well as become more prevalent in a population over time.
Natural selection will occur if three conditions are met, according to Darwin's theory. These conditions, which are outlined as,
Represent a struggle for survival.Exhibit variation.Undergo inheritance.These are the conditions that are said to be both necessary and sufficient for natural selection.
Natural selection will only result in evolution if an organism is able to process traits, compete for resources, and produce offspring.
Thus, the correct option is d.
For more details regarding natural selection, visit:
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. Rain washing away soil from a hillside is an example of.... *
1 point
weathering
erosion
deposition
Plz helpp
Answer:
erosion
Explanation:
rain moving soil is the earths crust slipping, also known as erosion
Answer:
Erosion
Explanation:
because weathering is the breakdown of rocks by physical or chemical weathering, deposition is the dropping of eroded material, and erosion is the movement of rock material from one place to another.
Hope you understood the concept at least.
Should humans use synthetic materials that have natural material that is the same chemically? PLZ I NEED THIS NOW
Answer:
It Depends . Like Some People Use Fake Skin For Tattoos , Made To Practice Stitches , Or Injections .. It Just Really Depends On What You Are Doing If This Helps ..
Name the 4 bases found in DNA.
Answer:
thyminene, T
adenine, A
guanine, G
cytosine, C
Explanation:
Answer:
Adenine, thymine, cytosine and guanine
Explanation:
Which of the following is true?
A
The flow of gases varies directly with airway resistance.
As lung compliance increases, the energy required to breathe increases
Surfactant increases the cohesiveness of water molecules therefore decreasing
the surface tension of the alveolar fluid.
O Infant Respiratory Distress Syndrome occurs when there is a lack of surfactant
produced. THis is common in premature infants.
In healthy individuals, friction is a major factor affecting pulmonary ventilation
Answer: Infant Respiratory Distress Syndrome occurs when there is a lack of surfactant produced. This is common in premature infants.
Explanation:
Respiratory distress syndrome (RDS) is a well-known breathing disorder that is common in premature infants. It happens when there is a lack of surfactant produced in the baby's lungs which is quite bad because surfactant enables babies to breathe when they are born by keeping the lungs expanded.
It is common in premature infants because the lungs only begin to produce surfactant in the third trimester so babies that are born prematurely did not get to produce sufficient quantities. If not treated immediately, brain damage could follow.
What can HIV become? (write it out)
HIV came become AIDS (acquired immunodeficiency syndrome) if not treated.
Plz help Well mark brainliest if you are correct!!
Answer:
Rachel Carson (B)
Explanation:
She was an marine biologist.
An ecologist is someone who studies an environment such as the ocean and also studies the things in the environment.
PLS HELP WILL GIVE BRAINLIEST need answers by today!
Which of these is NOT large and gaseous?
A) Jupiter
B) Mercury
C) Saturn
D) Uranus
Answer: B) Mercury
brainliest?
Explanation:
*Earth Science* Active continental margins where the plate boundary is ocean-continent convergent are characterized by accretionary wedges.
True or false?
The correct answer is True
Explanation
An accretion wedge is an area where deformed sediment accumulates that occurs at a convergent edge at the boundaries of subduction plates (ocean-continent). This process occurs when sediments from the oceanic crust accumulate to the block of continental crust produced. by the subduction movement of the oceanic crust. So, the correct answer is True.
Plz help me well mark brainliest if you are correct!
Answer:
The answer is gravity.
Give a scenario in which a new ecosystem would be created
How did black leaders and abolitionists embody the democratic principles and ideals of liberty and equality in their actions?
Please Help Me i need a good grade!
FAST!!!!!!
Answer:
it's the second one/B because it's the only one that is correct :)
what is process of forming an exact copy of the dna molecule called?
fertilization is the process by which an a)egg and pollen combine b)embryos grow into plants c)animal carries pollen between plants d)ovule breaks open and release seeds
Answer:
l
Explanation:
check this for me pls
Answer:
it's both A and B for your answer
Explanation:
both genders can get this disease since it's being past down to their children or offspring, some may get that gene and some might not.
8. Which is true about viruses!
a. They are prokaryotic cells that infect living organisms
b. They are nonliving particles that infect living organisms
C. They are eukaryotic cells that infect living organisms
d. They are fungi that infect living organisms
Answer:
The Answer is gonna be A. They are prokaryotic cells that infect living organisms
This is the right Answer :3
I hope you are having a great day ❤️❤️❤️❤️
Which statement describes a non-native species?
A. It is a poor predator.
B. It increases stability of a community.
C. It has been introduced to a new area.
D. It has no permanent home.
Answer:
c
Explanation:
a non-native species is a species that isn't familiar/native to the place. if it is introduced or moved to a new area, then it is non-native.
The main function of cell respiration is to produce A. glucose B. NADH and FADH2. C. CO2. D.mitochondria E. ATP.
Again No links thank you!
Identify the existence of Neutrons.
Which limiting factor is this adaptation a response to
Answer:
Answe
Explanation:
A limited factor that causes adaptation is the loss of habitat,food,or new species.
Write the relationship between cells, tissue and organs in human body.
(plzzzzz answer correctly)
Answer:
Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
Explanation:
How can the application of insecticides and herbicides affect an individual’s health? a. Insecticides and herbicides can potentially contaminate foods. b. Insecticides and herbicides increase the disease rate of agricultural plants. c. The application of herbicides and pesticides reduces the vitamin content of crops. d. Herbicides and insecticides increase the health value of crops by adding necessary nutrients.
Answer: A. Insecticides and herbicides can potentially contaminate foods.
Answer:
the answer is A
Explanation:
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