A. Both theories describe the rates of speciation. For Gradualism, changes in species is slow and gradual, occurring in small periodic changes in the gene pool, whereas for Punctuated Equilibrium, evolution occurs in spurts of relatively rapid change with long periods of non-change.
B. New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed.
C. Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. ... Sympatric speciation occurs when two species are living in the same environment.
D. Reproductive isolation is a mechanism that keeps species from mating with others. Prezygotic isolation prevents the fertilization of eggs while postzygotic isolation prevents the formation of fertile offspring. ... Postzygotic mechanisms include hybrid inviability, hybrid sterility and hybrid "breakdown."
4. Lunar eclipses can only happen when Earth is in between the sun and
the moon.*
O a. True
O b. False
Answer:
the answer to this is True
once transcribed, eukaryotic mRNA typically undergoes substantial alteration that includes
(a) union with ribosome
(b) excision of introns
(c) fusion into circular forms known as plasmids
(d) linkage to histone molecules
Answer: B
Explanation:
B describes the RNA processing, which only occurs during eukaryotes and invovles the splicing out of introns and putting together of extrons.
Answer:
b
Explanation:
An increase in which of the following factors is likely to contribute to competition between two members of the same species living in a certain habitat?
Group of answer choices
Available food resources
Population of the species
Annual rainfall
Overall size of the habitat
Answer:
population of the species
Select all that apply
regulate enzyme activity in metabolic pathways.
Neurons
Inhibitors
Glucose molecules
Lipids
Activators
Answer:
lipids
Explanation:
A science teacher asked students to describe and explain an internal adaptation that allows for a specific function. Students wrote the following:
Student 1: Leaf frogs can change their appearance to match their surroundings.
Student 2: Birds have hollow bones, enabling them to fly.
Student 3: Penguins live together in groups.
Student 4: Musk ox have thick, shaggy hair to protect them from cold temperatures.
Which student’s answer describes and explains an internal adaptation that allows for a specific function?
A - Student 1
B - Student 2
C - Student 3
D - Student 4
Answer:
A science teacher asked students to describe and explain an internal adaptation that allows for a specific function. Students wrote the following:
Student 1: Leaf frogs can change their appearance to match their surroundings.
Student 2: Birds have hollow bones, enabling them to fly.
Student 3: Penguins live together in groups.
Student 4: Musk ox have thick, shaggy hair to protect them from cold temperatures.
Which student’s answer describes and explains an internal adaptation that allows for a specific function?
Explanation:
As internal adaptation refers to anatomical adaptation so correct option is B - Student 2: Birds have hollow bones, enabling them to fly.
The bones of birds have hole openings inside. Therefore, chicken bones are much less dense than human bones. These hole areas purpose the chicken to have lighter mass, permitting a less difficult raise for flight. Birds additionally have air sacs which can be extensions of their lungs. Hollow bones also are referred to as pneumatized bones, which means they may be full of areas for air. It is the notion that this shape allows for oxygen consumption throughout the flight. Air sacs are connected to the hole regions in a chicken's bones.What is the use of feathers?Birds have feathers that assist them to fly. The lengthy flight feathers at the wings and tail assist birds' stability and steering. In addition, birds have a device of air sacs of their frame that hook up with the lungs. The air sacs permit birds to extract plenty greater oxygen from every breath of air than different animals can.
Thu it is clear that birds have hollow bones, enabling them to fly is an internal adaptation.
To learn more about internal adaptation refer to the link :
https://brainly.com/question/1213023
Why does Jupiter not have a very strong pull on
the Earth?
Answer:
it doesn't have a strong pull because
Explanation:
since the sun is much bigger the gravitational pull is keeping Jupiter from pulling earth closer although it is still pulling on the planets around it
look at the topographic map of calton hill below which side of the hill is the steepest
Answer:
Explanation:
Where is the picture?
State the function of Bowman's capsule and glomerulus.
➜ Bowman's capsule and glomerulus have semipermeable walls.
The glomerulus, is a tuft of capillaries contained in Bowman's capsule.The water and dissolved substances (wastes and useful) are filtered into the Bowman's capsule and from here they are filtered into the tubule.Thus, both the structures act as filtering apparatus.Can someone give me the answer for both questions please:)
Answer:
The answers are:
C danimeletion
B dna - rna - amino acid - protein - genetic expression
A student is shown a slide of cells from a species of a producer
in a food web. The student observes that the cells have
chloroplasts. What conclusion about the food web is best
supported by these findings?
o
A. The producers capture energy from sunlight.
B. The food web contains many herbivores and omnivores.
C. The food web is found in a terrestrial ecosystem.
D. The producers in the web are single-celled organisms.
Answer:
the producers capture energy from sunlight
please help im boutta cry
Answer: Ultraviolet waves have short not long wave lengths
How does oxygen pass into the bloodstream
Answer:
oxygen diffuses to the cappilaries that are covering the alveoli in the lungs
Explanation:
In plants and animals, sexual reproduction causes variation
within a species. This variation is vital to their survival. How does
genetic variation affect a species' survival?
A. A species with variation is more easily found by predators.
B. A species that shows more variation will have a longer life cycle.
C. A species that has no variation might eventually become extinct.
D. A species without variation will overpopulate and produce new
species.
BIOLOGY DNA SECTION 1
1. Why does DNA replicate?
2. Is DNA replication describe as conservative or semi-conservative? Why?
3. What 2 enzymes are used during DNA replication? Describe what each does during replication.
4. When does DNA replication occur in a cell?
5. Where does DNA replication occur in a cell?
1. to ensure continuity and preservation of genetic material.
2.semi conservative
3.a DNA polymerase : unzip the DNA strand.
b Helicase : unwind dna strand
4.during the s stage of interphase
5. Nucleus
places where seeds are stored to help preserve biodiversity?
Answer:
Millions of these tiny brown specks, from more than 930,000 varieties of food crops, are stored in the Global Seed Vault on Spitsbergen, part of Norway's Svalbard archipelago. It is essentially a huge safety deposit box, holding the world's largest collection of agricultural biodiversity.
Explanation:
thanks me later
The tests and ovaries are structures in which of the following two body systems?
A. Reproductive and Muscular
B. Reproductive and Endocrine
C. Reproductive and Nervous
D. Endocrine and Nervous
Answer:
the answer is B
Explanation:
the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands
Please help As soon as possible thanks so much!
which statement best describes the organization of the taxa shown in the image
A. as you move down the structure, the groups become more general
B. there are more organisms in each group as you move down the structure
C. as you move up the structure the group becomes more specific
D. as you move down the structure, there are fewer organisms in each group
Answer:
D. as you move down the structure, there are fewer organisms in each group.
Explanation:
When we move down from kingdom to species, the number of organisms decreases because more closely related organisms are placed down the group. There are fewer kingdoms that have a large number of organisms in it and has less similarities among them and when we move down, the number of organism decreases in number and at the end there are few organisms are present in it which is more closely related to each other.
Use the words, DNA, chromosome, and gene in a sentence.
Answer:
the DNA, chromosome, and gene can all be similar in some way
use the calculate in above to find the ratio of the following SIN BAD
Answer:
SINBAD is king of Sindria
Explanation:
Explain in brief the sensitive issues of general public about disaster?
Answer:
loss of life, financial loss, injuries, spreading of diseases,
Explanation:
post-disaster rehabilitation. - Loss of life occurs in various types of disasters. ... - Post-disaster rehabilitation is also a sensitive issue. Many times, there is delay in financial help from the government authorities.
How are coffee farms a threat to migrating birds?
I’ll mark as Brainliest!
4. There are three codons that signal the end of synthesis, these are called STOP codons.
What are the three stop codons?
Answer:
UAG, UAA, and UGA are the three STOP codons.
Explanation:
Describe fertilisation in terms of cellular and intracellular changes. I will be very happy if someone answer this I will give them brainly and likes
Answer:
during this process the nucleic of the male and female gametes are fused in order to create a zygote .known as fertilisation.Gametes contain half the number of chromosomes of all other cells in the organism .Meaning they are haploid .
Cells responsible for fertilisation:
fertilisation is the fusion of the nucleus of a male gamete with the nucleus of a female gamete ,producing a new cell called a zygote
hope it helps
What is heat? ..........
Answer:
why type of heat? do you mean like heat from the sun, animal heat (mating), heat from like electronics? lol (ill help i just need to know which type)
Explanation:
Complete this sentence to create an argumentative claim .
Rosa Park's act of civil disobedience was a pivotal moment in the civil right movement
A) that brought national attention to the harsh realities of jim crow laws
B) that inspired other advocates of her generation and generation to come
C) and her efforts should be commemorated by putting her image on a pice of us currency
D) but at the time she did not know her single action would ignite a firestorm of protests and boycotts.
Answer: bbb
Explanation:
Injunction
The speed of a wave is 40 m/s. If the wavelength is 80 centimeters, what is the frequency of the wave?
What are 5 benefits of solar power?
Reduces Air Pollution.
Reduces Water Usage.
Reduces Dependence On Nonrenewable Energy Sources.
Improves Humanity's Health In The Long-run.
Helps Fight Climate Change.
Help ill award branliest!
Is it possible to know the genotype of a purple flower just by looking at it? Explain why or why not.
Answer:
yes
Explanation:
because depending on what the middle of the flower looks like( the pollen things) you can tell if its male female etc
A scientist observes a geyser erupting. Which two objects must be interacting beneath the surface?
O well and spring
O spring and magma
O magma and groundwater
O groundwater and unsaturated zone
Answer:
c
Explanation:
Magma and groundwater are responsible for the eruption of geyser.
GeyserGeyser eruptions are as a result of the conversion of thermal to kinetic energy during decompression.
When the groundwater deep in the ground is heated up by magma, pressure is released and the water will erupt out of the ground as a geyser. Eruptions occur about every 50-100 minutes.
Find out more on Geyser at: https://brainly.com/question/79492