Answer:
represses gene transcription and promotes mRNA translation.
Explanation:
Homeotic gene refers to any group of genes that controls the pattern of formation of body structure during early embryonic development of organisms. These genes encode proteins which is called transcription factors that direct cells to form various parts of the body. Homeotic genes is the master control genes that regulate other groups of genes that are responsible for the development of body parts that will develop in different locations.
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:A
Explanation:
Trust me bro
Which climate is best for supporting both plant and animal life? A.Tropical Rainforest B. Tundra C. Temperate Deciduous forest D. Desert E. Savanna F. Taiga
Deciduous forests, it holds both plant life and animals that thrives extremly well.
Which of the diagrams best represents the structure of the nervous system
Use a Punnett square diagram to show why, for each pregnancy, the chances of giving birth to either a boy or a girl are 50-50. Explain the results shown in your diagram.
Answer:
Because the offspring of a male and female are always going to be xx, xx, xy, or xy.
Explanation:
Remember that men have different reproductive chromesomes than women. Women have 2 x chromesomes(xx) while men have 1 x and 1 y(xy). These are given down to their offspring.
So we can write the this out in a punnet square as(link down below).
After you see the visual, you will find that the genotypes are xx, xx, xy, xy.
As I said above, women have sex chromesomes xx, while men have sex chromesomes xy. When you match the genotypes on the punnet square with the ones we know from men and women, we find that two of them match with men and two match with female.
So with this, we can conclude that 2/4 of offspring will always be male and 2 will be female. And as you well know 2/4 is 1/2 which is 50%.
Which of the following factors decrease biodiversity? (Choose all that apply)
a. habitat destruction
b. unpredictable precipitation
c. warm temperatures
d. freezing temperatures
Answer:
habitat destruction, unpredictable precipitation, and freeing temperatures.
Explanation:
i took the quiz
The destruction of the habitat, unpredictable precipitation, and freezing temperatures decreases biodiversity. Thus, options a, b, and d are correct.
What is biodiversity?Biodiversity is the variety of life that sustains on earth and lives in a particular habitat. The biodiversity can be measured based on the ecosystem, species, and genetics. It comprises the ecological and evolutionary process.
The destruction of the habitat of a species can lead to a decrease in biodiversity as it affects the ecosystem and the ecological pyramid as a whole and will affect the population of the species.
The unpredictable precipitation can affect the species and the habitat as it may lead to floods that will destroy the habitat hence resulting in the loss of species.
Similarly, the decrease in temperature will affect many species as they will not be able to cope with low temperature resulting in their death.
Therefore, the unpredictable precipitation, freezing temperature, and destruction of habitat lead to a decrease in biodiversity.
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What part do humans play in gene flow?
Answer:
Humans reproduce and pass on their genes to their offspring.
I I am really really confused about these two questions does anybody know the answer to both of them
Answer:
1) Topographic maps show contours, elevation, forest cover, marsh, pipelines, power transmission lines, buildings and various types of boundary lines such as international, provincial and administrative, and many others. (Answer: Elevation)
2) Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. The diagram illustrates how contour lines show relief by joining points of equal elevation. (Answer: Contour Line)
which fish is exotic in among these common carp or mori or thaila?
Answer:
common carp
Explanation:
Given that Exotic fishes are a type of fishes that being raised in an environment that is not native to them. Usually, exotic fishes are known for surviving easily in a country that is not originally their own.
Among the available options, COMMON CARP is a type of fish that is known for its exotic nature. So far, it has been introduced to other continents and countries other than their country of origin.
They easily reproduced and multiply, thereby easily adapt and populate their new environment.
The smaller a population of organisms of a particular species, the
A.
more likely one of the organisms is to adapt to a changing environment
B.
more likely a mutation is to arise
C.
less likely the species will be able to survive in a changing environment
D.
less likely natural selection is to affect the population
Answer:
The correct answer is - D. less likely natural selection is to affect the population
Explanation:
The larger population of a species tends to produce more mutant individuals per generation than a smaller population per generation. In a larger population, it assists to get more genotypes and gets optimal genotypes quicker than smaller populations.
In larger populations, the process of natural selection is more effective and for the smaller population Second, natural selection is less likely to affect the population which leads to less genetic diversity or change in order to survive due to stochastic sampling error as some allele loss in random selection.
3. The presence of Malaria in many countries has been eradicated and even in parts of Africa, the incidence of Malaria has been reduced substantially. Without endemic malaria from Africa, the sickle cell mutation is purely disadvantageous. What do you think will happen to the percentage of people carrying the Sickle Cell gene over time under the pressures of natural selection
Answer:
The percentage of people carrying sickle cell gene increases.
Explanation:
People carrying the Sickle Cell gene have low chance of Malaria because the sickle cell enables the body to detoxify abnormal red blood cells from the body. When the malarial parasite attacks on the cells of the body, the molecular machinery for cleaning up the waste is already present in the body. Those places where malaria is common, the people having sickle cell because the sickle cell show resistance against malarial disease.
What pattern of inheritance is represented punnet square
Answer:
Autosomal Dominant Inheritance
Explanation:
If nondisjunction occurs during meiosis II, how many of the daughter cells will have an incorrect number of
chromosomes?
Please answer please I need help thank you
Algae provides more energy to the Box Turtle population.
If you see the bottom of the chain, Algae, whether the turtles eat it or not, also provides energy/food/resource for other forms of energy the turtles can consume, it's the base of the chain.
The answer is not aquatic insects because they do not supply as energy to as many sources as algae.
Hope this helped!
Allie was in the park playing on the equipment. She noticed that on the highest slide, she slides down
A)
without friction.
B)
with the slowest speed.
with the greatest speed.
D)
at about the same speed as the shortest slide.
question 10
Norepinephrine is produced from
A. tyrosine
B. serotonin
C. epinephrine
D. damfino
E. tryptophan
F. histidine
which process is needed for evolution to occur? PLEASSE HELPPP THIS IS A BIG GRADE
Answer: D. Genetic mutation
Explanation:
For evolution to occur, there must be a genetic mutation in the genome of an organism such that a new allele is formed.
If this mutation occurred in the sperm and/or the ovum, the mutation will then be passed on through reproduction to the next generation. This leads to more of the subsequent generations having that mutation thereby leading to evolution.
In the liver, excess amino acids are broken down into ____________ and rapidly combine with ____________ to produce urea, which is much less toxic to cells.
Answer:
In the liver, excess amino acids are broken down into ammonia and rapidly combine with carbon dioxide to produce urea, which is much less toxic to cells.
Explanation:
The correct answer to the given quested about Urea Cycle is Ammonia and Carbon dioxide respectively and the complete statement will be "In the liver, excess amino acids are broken down into Ammonia and rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells."
What do you mean by Urea Cycle?The urea cycle, commonly referred to as the ornithine cycle, is a series of metabolic processes that converts ammonia into urea (NH2)2CO (NH3).Highly poisonous ammonia is transformed into urea by rapidly combining with carbon dioxide via the urea cycle for elimination. Five years before the TCA cycle was found, this cycle was the first to be identified as a metabolic process. Later, Ratner and Cohen provided a more thorough explanation of this cycle.Thus we can conclude that in the liver, excess amino acids are broken down into Ammonia which is highly toxic to cells and that ammonia rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells.
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Can someone do this lab for me?
I don't have the materials or time. Hopefully, someone has done this before so they can give me some general results and observations. Thanks! :)
HELP WILL GIVE BRAINLIEST
Answer:
What are you talking about?
Explanation:
What
Key Term Matching
1. accessory organs
2. fundus
3. uvula
4. villi
5. large intestine
6. root
7. dentin
8. lamina propria
9. fauces
10. chyme
11. incisor
12. parietal cells
13. crown
14. stomach
15. cheeks
16. serosa
17. enamel
18. stratified squamous
19. gingivae
20. small intestine
21. pharynx
22. liver
23. molar
24. mucins
25. acinar cells
a. forms bulk of tooth
b. performs compaction
c. a cutting tooth villi
d. liquid food mixture in stomach
e. posterior opening of oral cavity
f. has three muscularis externa layers
g. portion of tooth above gum line
h. epithelium found in esophagus
i. are connected to GI tract by a duct
j. composed of loose connective tissue
k. dome-shaped stomach region
l. organ shared with respiratory system
m. substance harder than bone
n. exocrine part of pancreas
o. projection off of soft palate
p. in saliva to lubricate food
q. finger-like extensions of mucosa
r. portion of tooth below gum line
s. the gums
t. performs 90% of digestion and absorption
u. secretes bile
v. a grinding tooth
w. secrete HCI
x. outermost layer of GI tract wall
y. lateral walls of the oral cavity
Which is the main function of the respiratory system?
1. to protect the internal organs
2. to help oxygen get into blood vessels
3. to push blood to all parts of the body
4. to protect the body from illness
Which human activity is correctly paired with the greenhouse gas that it increases?
A)rice cultivation and water vapor
B)landfilling and carbon dioxide
C)deforestation and methane
D)sewage treatment and nitrous oxide
The answer is (D) now on edge 2021
Answer:
the answer for ur question is D
the law of conservation of mass means that n an isolated system matter cannot be_______
Answer:
Matter cannot be created nor destoyed
Micro arthropod is
(a) Scabies mite
(b) spirogyra
(c) Amoeba
(d) Yeast
Answer:
Scabies Mites are Micro Arthopods
According to the law of conservation of energy, what can happen to the total
energy of a system?
A. The total energy must remain the same, but energy can change
forms and be transferred within the system.
B. Energy must be transferred out of a system if energy is transferred
into the system so that they total energy of the system stays the
same.
C. The total energy can decrease when energy is lost due to energy
transformation within the system.
D. The total energy can increase if energy is transferred into the
system from surroundings.
SUBMIT
Answer:
the total energy must remain the same,but energy can change forms and be transferred within the system
Mechanical weathering is commonly the result of all of the following except _____.
wind
plant disturbances
gravity
humans
ice
animal disturbances
running water
chemical reactions
Answer:
The diagram represents the process of enlarging a rectangle using a scale factor of 3. The width of the original rectangle must be:
9 in.
11 in.
12 in.
17 in.
Explanation:
What are the two main ways bacteria cause illness?
A. By releasing toxins that poison your cells
B. By using your cells to make copies of themselves
C. By changing the genetic material inside your cells
D. By breaking down your cells for nutrients
Answer:
A. By releasing toxins that poison your cells
B. By using your cells to make copies of themselves
Explanation:
Within the body, bacteria can divide (multiply) and kill host cells by disrupting their normal functioning. Moreover, bacteria secrete toxins that are able to destroy host cells' metabolic machinery. For instance, many bacteria synthesize exoenzymes and interferons that disrupt and destroy host cells. Bacterial toxins can be synthesized internally in order to develop sensitivity through antigenic properties.
What is the name of the structures at the end of the bronchioles where gases are
exchanged?
Olarynx
Oalveoli
O trachea
Oepiglottis
Answer:
Alveoli
Explanation:
What is the Society of American Foresters?
A union
A business
A government agency
A professional organization
What are the possible genotypes for a tall plant