Answer:
a mutation in the germinal line changed the phenotype to bright flowers which were capable of attracting more pollinators compared to yellow flowers. Subsequently, this mutation was selected by natural selection, thereby increasing its frequency in the population
Explanation:
A mutation is any change in the nucleotide DNA sequence of the genome of a particular organism. Mutations can be divided into 1-germinal mutations (i.e., mutations that occurred in the gamete cells) which can be passed on to offspring, and 2-somatic mutations (i.e., mutations that occurred in the somatic cells), which cannot be inherited. Moreover, mutations can be neutral, deleterious or beneficial depending on the environment in which the organism lives. When a germinal mutation is beneficial, the organism carrying the mutation will have more chances to survive and reproduce (i.e., a higher adaptive fitness), thereby the organism will have more chance to pass this mutation to the next generation and the mutation will increase its frequency in the population.
What is the main relationship among archosauria, diapsida, and reptilia clases?
Answer:
Archosauria (the "ruling reptiles") is a major group of diapsids, differentiated from the other diapsids by the presence of single openings in each side of the skull, in front of the eyes (antorbital fenestrae), among other characteristics. This continues the tetrapod trend of the reduction of skull bones by the fusion of multiple bones and the opening of fenestrae in the skull. This helps to lighten the skull, provides more room for muscles and other tissues, and allows more skull flexibility (kinesis) when eating. Other typical archosaurian characteristics include another opening in the lower jaw (the mandibular fenestra), a high narrow skull with a pointed snout, teeth set in sockets (called thecodont tooth implantation), and a modified ankle joint.
Diapsids ("two arches") are a group of amniote tetrapods that developed two holes (temporal fenestra) in each side of their skulls about 300 million years ago during the late Carboniferous period.[1] The diapsids are extremely diverse, and include all crocodilians, lizards, snakes, tuatara, turtles, and birds.[2] Although some diapsids have lost either one hole (lizards), or both holes (snakes and turtles), or have a heavily restructured skull (modern birds), they are still classified as diapsids based on their ancestry. At least 7,925 species of diapsid reptiles[3] exist in environments around the world today (nearly 18,000 when birds are included).
Reptilia, presented as a Class in our classification, includes turtles (Testudines), snakes and lizards (Lepidosauria), crocodiles and their relatives (Crocodilia), and birds (Aves), as well as a number of extinct groups.
Explanation:
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What are the seven taxon characteristics of a human again?
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ד ר ת
Answer:
I believe they are Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Explanation:
Compare how ectotherms and endothermic maintain body temperature
Answer: Ectotherms depend on external heat sources. Their body temperature changes with the temperature of the environment. Endotherms generated heat internally to maintain body temperature.
Explanation:
Carbon cycles through the biosphere in all of the following processes EXCEPT
a. photosynthesis
b. burning of fossil fuels
c. transpiration
d. decomposition of plants and animals
PLEASE HURRY
Based on this graph
What is the approximate age of the dust sample?
A. Between 4 and 5 billion years old
B. Between 6 and 7 billion
years old
C. Between 24 and 25 years old
D. Between 32 and 33 billion years old
Answer:
B
Explanation:
Answer:
b
Explanation:
Put these in order NO LINKS NO LINKS
Drag the structures to the appropriate boxes in order that oxygen would travel from the outside of your body to the blood stream
Choices: bronchi, nasal cavity, capillaries, trachea, pharynx, aveoli, bronchioles
IF YOU DON'T KNOW THE ANSWER, DON'T ANSWER THIS QUESTION
Answer:
Nasal Caviry
Trachea
Pharynx
Bronchi
Bronchioles
Aveoli
Capillaries
please help!!!!!!!!!!!
Answer:
Typically, the nucleus of a cancer cell is larger and darker than that of a normal cell and its size can vary greatly. Another feature of the nucleus of a cancer cell is that after being stained with certain dyes, it looks darker when seen under a microscope
Explanation:
In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.
Inherited traits are:
A. Dependent on diet
B. Acquired during an organism's life
C. Free of mutations
D. Passed on from parent to offspring
Last month, Sarah documented how her city suffered from acid rain. What type of pollution should the people in Sarah’s city try to control?
Answer: I need more information to answer.
Explanation:
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Answer:
Yes; When the cell grows larger,, it needs more cell membraine to prepair for mitosis. Without this process, the cell would rupture.
Yes; The cell would not be able to grow if the surface area stayed the same.
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25 POINTSSSS!!!!!
In which system of plant do the tissues xylem and phloem work?
In vascular system of plant do the tissues xylem and phloem work
Someone help me plsssss
Answer:
C part is the correct answer
What are the three involved elements in Photosynthesis?
Answer:
Carbon dioxide , water and water
MULTIPLE-SELECT QUESTION: CHOOSE TWO
CORRECT ANSWERS
STRUCTURES AND FUNCTIONS
A. There is not enough information to build the cladogram
B. The frog is placed in Position A on the cladogram above.
C. The pig is placed in Position B on the cladogram above.
D. The gorilla is placed in Position D on the cladogram above.
Answer:
B and D
Explanation:
What is the purpose of mitosis for our bodies?
Answer:
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells
Explanation:
Please help me answer this.
the questions are.
In part 1 of her exercise warmup, her heart rate ____ because ____ (include oxygen and homeostasis in your answer)
In part 3 of her exercise, endpoint/ cool down, her heart rate ____ because ______ (include oxygen and homeostasis in your answer)
There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with
stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection
seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of striped frogs and unstriped frogs have the genotype ss.
OB. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
OD. Most of striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
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Should ever come back...Should ever come back....
What happens to the cells of a person who has cancer?
Explanation:
Cancer happens when cells that are not normal grow and spread very fast. Normal body cells grow and divide and know to stop growing. Over time, they also die. Unlike these normal cells, cancer cells just continue to grow and divide out of control and don't die when they're supposed to.
Cancer cells continue to grow and divide out of control and don't die when they're supposed to.
Which air mass would produce warm, humid weather in the summer?
Answer: maritime tropical air mass
Explanation: The oceanic tropical air mass regularly creates a warm, muggy climate in the mid-year. The air mass begins from over the warm water of the jungles and Gulf of Mexico, where warmth and dampness ordinarily move to the air above from the water beneath.
2. How do your respiratory and circulatory systems attempt to maintain homeostasis during exercise?
A. Your body produces more red blood cells to help provide energy to cells.
B. Your lungs produce more oxygen which is then delivered to the cells through the blood.
C. You experience an increase in blood flow which provides nutrients to cells to increase energy and
remove wastes.
D. You experience an increase in breathing rate to obtain more oxygen which is delivered to cells
through the bloodstream.
HELP HELP AHHHHHHHH Which human activity will most likely contribute to ozone layer destruction?
Answer:
well cutting down trees using chemicals burning foccle fules
Explanation:
Please match the correct term to it definition
Answer:
Explanation:
1: Is symbiosis
2: is eutrophication
3: Predation
4: Trophic efficiency
5: Greenhouse effect
6: Nutrient cycling
Hope this helps!
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3. Synthesize in your own words, explain why scientists believe that threats to amphibians present a warning about a number of environmental threats to Earth's biodiversity Refer to the Case Study.
Explanation:
Scientists give three reasons. First, amphibians are sensitive biological indicators of changes in environmental conditions such as habitat loss, air and water pollution, ultraviolet (UV) radiation, and climate change.Amphibians are sensitive biological indicators of environmental circumstances such as habitat loss, pollution of the air and water, ultraviolet (UV) radiation, and temperature change.
What is biodiversity?The variety and variability of life on Earth is referred to as biodiversity or biological diversity. A measure of variation at the genetic, species, and ecosystem levels is called biodiversity.
Biodiversity refers to the variety of all the diverse species of organisms that dwell on our planet, including the plants, animals, insects, and microorganisms.
Each of these things exists in a delicate balance and coexists with the others in ecosystems that nourish and sustain life on earth.
Amphibians are sensitive biological markers of changes in environmental conditions like temperature, UV radiation, habitat loss, and air and water pollution.
Thus, scientists believe that threats to amphibians present a warning about a number of environmental threats to Earth's biodiversity.
For more details regarding biodiversity, visit:
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2 Sa mga paraan na ipinakilala ng Kagawaran ng Edukasyon ( deped ) tulad ng modular learning, simual learning, blended learning, ete ano ang pin ma? Ipaliwanag kung bakit ito ang napili mong paraan. please po i give you brainliest
Answer:
tanungin mo guro mo hahahah
What are 2 things that two male polar bears might compete for in an ecosystem?
Answer:
Food and habitat resources
Explanation:
Ecosystems are communities that animals and organisms fight and survive in.
Answer:
bro ide man i can't even tell you man iExplanation:
Why don't negative mutations usually increase in frequency in populations?
Answer:
Within a population, each individual mutation is extremely rare when it first occurs; often there is just one copy of it in the gene pool of an entire species. But huge numbers of mutations may occur every generation in the species as a whole.
Works Cited:
Oct 29, 2007
Https://www.scientificamerican.com
Explanation:
Hope this helps!
Mutated codons code for what in silent mutations?
Answer:
Code for the same amino acid as the original codon
Explanation:
Mutation, which is any alteration in the nucleotide sequence of a gene, can occur when there is a replacement of base nucleotides. This is called SUBSTITUTION MUTATION. Substitution mutation can either lead to missense, nonsense or silent mutations.
As stated in this question, SILENT mutation is the one in which there is no change in the amino acid sequence after translation of the mutated mRNA. In other words, the mutation leads to an alteration of codon but the MUTATED CODONS CODE FOR THE SAME AMINO ACID as the original codon, hence, no effect on the protein produced or individual, in general.
There are 300 falcons living in a forest at the beginning of 2013. Every year, there are 50 falcons born and 30 falcons that die.
What is the the population growth rate?
Answer:
The growth rate is 20+ Falcons are born per year.
Explanation:
Hope this helps!
Answer:
Population in the world is currently (2020) growing at a rate of around 1.05% per year (down from 1.08% in 2019, 1.10% in 2018, and 1.12% in 2017). The current average population increase is estimated at 81 million people per year. Annual growth rate reached its peak in the late 1960s, when it was at around 2%.
Explanation:
How many amino acids are attached to one tRNA?
Answer:
One amino acid
Explanation:
Compared to ALL of the other planets in our solar system, how would you describe Jupiter? A) the biggest planet B) about the same size as Earth C) the planet closest to the Earth D) the planet farthest from the Sun
Answer:
option A
Explanation:
the biggest planet
Answer:
A) the biggest planet in our solar system.