Answer:
During prophase of meiosis I, the double-chromatid homologous pairs of chromosomes cross over with each other and often exchange chromosome segments. This recombination creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.Hope this is fine for you!!Which best describes a gene?
the short arm of a chromosome
tightly coiled strands of DNA
the center of a chromosome
a segment of chromosomal DNA
Answer:
A gene is a segment of a DNA strand.
Answer: a segment of chromosomal dna
Explanation:
Respiration is helpful in (1 Point) Removing waste from the body Producing energy within the body Production of proteins Production of carbohydrates
Answer:
Producing energy within the body.
Explanation:
Fossil fuels deep in the earth act as a carbon reservoir, storing it for millions 1 point
of years. What happens when humans extract and burn fossil fuels for
energy?
Carbon Dioxide levels increase in the atmosphere
Oxygen levels in the atmosphere decrease
There is more oxygen in the atmosphere
Carbon Dioxide is removed from the atmosphere
What elements make up most of the earth's.
Answer: By burning fossil fuels, people are changing the carbon cycle with far-reaching ... The rest is in the ocean, atmosphere, plants, soil, and fossil fuels. ... Graph of oxygen isotope ratios in the deep ocean for the past 67 million years. ... The increased temperature results in higher evaporation rates and a wetter ...
Explanation:
49. A test for starch in variegated leaves shows the importance of
A. sunlight
C. water
B. oxygen
D. chlorophyll
Answer:
D. Chlorophyll
Explanation:
Chlorophyll is important as it allows the plant to convert carbon dioxide and water into glucose.
16. Which genotype represents a recessive trait? *
1 point
ee
Ee
EA
EE
Answer:
ee
Explanation:
in order for the genotype to represent a recessive trait both alleles ( letters ) have to be lowercase hence the answer is ee
1. What is facial reconstruction? Why is it used?
Answer:
Facial reconstruction is when you examine the bones of your face to figure out changes to make.
disadvantages of using inorganic manure
Answer:
Inorganic fertilizers are not entirely composed of the nutrients needed by the plants. It also contains salts and other compounds. These are not absorbed by the plants so they are left behind in the soil and build up over time.
Which of the images below depicts a healthy reef ecosystem?
Image A, B, C, or D?
Answer:
A is the answer i think because it has more reef
Which three industries would be the most directly affected if regulations and laws regarding deforestation became stricter?
Answer: Timber industry, paper industry, furniture industry.
crossing-over can occur during meiosis I in:
a. prophase I.
b. metaphase I.
c. anaphase I.
d. telophase I.
Answer:
b. metaphase l.
Where are producers located on the energy pyramid?
Answer:
At the beginning of the pyramid
Answer:
At the ground state.
explanation:
Students are studying the length of time that different battery brands can keep flashlights
operating. Which of these should remain constant in this investigation?
A. The length of time
B. The color of the flashlights
C. The type of flashlights
D. The brand of the batteries
Help me guys in science
Explain the general distribution of life in aquatic systems as a function of chemistry, geography, light, depth, salinity, and temperature.
Different types of organisms can exist in a variety of aquatic environments due to the fact that they can vary significantly from place to place and that organisms within each water system will have evolved to adapt to their specific environment.
How does light affect aquatic life?Sunlight plays a vital role in the ocean’s ecosystem. First, sunlight enters the water column, warms it, creates currents, and is then absorbed by phosphorous-rich phytoplanktons. Phytoplanktons use the energy captured by phototrophs (pigments like chlorophylls) to convert water and nutrients into organic matter.
Light availability determines the types of organisms that can live in a particular part of an aquatic environment. The deeper the water depth, the less light it can penetrate until there is no light at all.
The salinity of water affects its density which in turn affects the movement of ocean currents. It may also affect marine life which needs to regulate the intake of salt water. There is a relationship between salinity, temperature, and water density. Therefore, any change in temperature or water density will affect the salinity of the water in the area.
Water chemistry parameters (pH, dissolved organic carbon, and hardness) play a role in metal toxicity by influencing the bioavailability of aquatic species of metals in water.
To learn more about the aquatic life, refer to the link:
https://brainly.com/question/15472245
#SPJ2
I NEED HELP ASAP A gradual increase in temperature of the Earth's atmosphere caused by gases and pollutants
A.Greenhouse gases
B.Fossil fuels
C.Global warming
D.Climate change
What is the function of the stigma?
A. To catch pollen grains
B. To produce eggs
C. To attract insects
Explanation:
A. to catch pollen grains
is yr correct ans.
hope it helps
stay safe healthy and happy..Answer:
A. To catch pollen grains
Explanation:
The function of the stigma is to catch the pollen grains.
Which material is the medium of ocean waves?
A. Sand
B. Water
O C. Air
O D. Rock
SUBMI
Answer:
Water
Explanation:
A medium is the substance through which a wave can propagate. Water is the medium of ocean waves.
Que sucedería con la especie humana si debido a una futura mutación genética sus células no pudieran realizar los procesos de mitosis y meiosis
Answer:
la vida no podría continuar sin los procesos de división celular
Explanation:
La mitosis es el proceso de división celular mediante el cual se producen dos células idénticas a partir de una sola célula. Durante la mitosis la célula crece y duplica la cantidad de ADN, con lo cual exactamente el mismo contenido de información genética es trasmitido a las sucesivas células que el proceso de mitosis va a dar origen. Por otra parte, la meiosis es un proceso celular en el cual se producen dos divisiones nucleares y citoplasmáticas (meiosis I y meiosis II) las cuales son precedidas por una fase de replicación del ADN. En la especie humana, la mitosis da lugar a células diploides (2n) con dos set completos de cromosomas homólogos, mientras que la meiosis da lugar a cuatro células haploides (n) llamadas gametos (el gameto masculino es el espermatozoide y el gameto femenino es el óvulo) las cuales contienen la mitad del número cromosómico al de la célula de origen. En organismos eucariotas pluricelulares tales como la especie humana, la función de la mitosis es producir más células somáticas (soma: cuerpo) con idéntico material genético, mientras que la función de la meiosis es producir células aptas para el proceso de reproducción, es decir, células con la mitad del material genético que se fusionarán para generar una célula diploide o zigoto a partir del cual y mediante sucesivas mitosis se desarrollará un organismo adulto.
Some functions of cellular organelles are given below.
a)Protein synthesis
b)Cellular respiration
c)Detoxify certain compounds
The organelles that perform the above functions are given respectively in which option?
(a) Mitochondrium,
Ribosome, Plastid
(b) Ribosome,
Mitochondrium, Endoplasmic
Reticulum
O (c) Ribosome, Golgy body,
Endoplasmic reticulum
(d) Ribosome, Plastid,
Endoplasmic reticulum
What are the two main types of minerals?
Answer:
The two main types of minerals are macro minerals and trace minerals.
Explanation:
Macro means large in Greek. And your body needs larger amounts of macro minerals. Calcium, phosphorus, magnesium, sodium, potassium, chloride, and sulfur make up the macro mineral group.
A trace of anything indicates that only a small amount of it exists. Even while your body requires trace minerals, it only requires a small amount of each. Iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium are examples of trace minerals.
Base your answers to questions 14 and 15 on the information in the diagram below and on your knowledge of biology. A) Finches with crushing bills eat only animals for food. B) Finches that eat animals always have larger beaks than finches that eat plants. C) Finches with grasping bills usually eat animals for food. D) Finches that eat plants all have very large beaks. 14. Based on the information in the chart, which statement is correct
Answer:
D) Finches that eat plants all have very large beaks.
Explanation:
Finches that eat plants have very large beaks because plants are big in size which can only be eaten with large beak. Those finches that lives in the environment having nuts and seeds having large beaks due to the big size of seeds and plant parts so that's why we can say that finches who feeds on plants parts have larger beaks as compared to those finches who feeds on insects.
Which of the following describes hemophilia?
O multiple-allele trait
O dominant trait
O sex-linked trait
O codominant trait
Choose the sentence that correctly uses pronouns.
Whom stopped to pay attention to the street performer?
Everyone from children to dogs out for walks stopped to listen to she.
Him enjoyed her unusual style and mix of instruments.
The singer herself wrote that beautiful song.
[tex]\sf\purple{D.\:The\: singer\: herself \:wrote \:that\: beautiful\: song.\:✅}[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]
Answer:The singer herself wrote that beautiful song.
Explanation:
I got it right when i took the test
Someone please help me
Answer:
Because the reaction creates glucose and oxygen, the products will be C6H12O6 + O2
Explanation:
What are the two sensory functions of ears?
Answer:
obviously listening and hearing
What part of the digestive system absorbs nutrients that our bodies need?
A. Mouth
B. small intestine
C. stomach
D. large intestine
Answer:
B. small intestine
Explanation:
The small intestine absorbs the most nutrients that our bodies need.
As you increase the temperature, the rate of photosynthesis increases and then decreases.
True
False
Answer:
true
Explanation:
Because plants need sunlight to do photosynthesis.
Which of the statements regarding the nitrogen cycle is true? a. Denitrification occurs when a nitrogen containing compound is produced from nitrogen in the soil. b. Atmospheric nitrogen is absorbed through the leaves of plants. c. Nitrogen fixation is the process atmospheric nitrogen is converted into biologically usable forms. d. Animals obtain nitrogen through the process of cellular respiration
Answer: Option C
Explanation:
The nitrogen cycle can be defined as the process by which the nitrogen is being recycled. The nitrogen is transferred from the atmosphere to the plants and then from plants to animals, human beings.
Then from animals and human beings it is again transferred into the soil and then atmosphere.
The nitrogen that is found in the sol is not in the usable form by the plants, nitrogen fixing bacteria converts it into usable form.
1) List three properties of rocks.
Answer:
three properties of rocks are;
they are hardthey have shape and sizethey have different texture.Answer:
Their shapes vary
They are hard
They have different textures
Explanation:
Hope it helps
Have a great day :)
Which of the following facts is the best evidence that humans and salamanders had a common ancestor?
A) Both species eat meat
B) Both species have pharyngeal arches and slits when they are embryos
C) Both species can swim
D) Both species have skin
Answer:
B
Explanation:
Look up an image of a human embryo v. a salamander embryo if you look carefully you'll see the arches and slits.
