Answer:
la selección natural es el mecanismo principal por el cual la evolución ocurre
Explanation:
Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.
Modern organisms in similar environments often have similar physical
features. For example, the Australian wombat and North American
badger, Selective pressure from similar environments over time led to
these similar
vestigial features
Ccreations,
homologous features,
analogous features,
Answer:
analogous features
Explanation:
Pressure from similar environments on the organisms over time led to these similar analogous features because of the similar environmental conditions for organisms leads to the physical features that are similar in structure and function. Analogous structures are the structures which are similar in appearance in unrelated or different organisms. These structures have similarities because they perform the same job and not because they share common ancestry.
How do actin and myosin work together to move a muscle?
Answer:
I don't know
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What happens to the distance between waves Wave lengths 
Help brainiest answer:(
Answer: if you eat it you would be eating radiation
Explanation: Common sense
What is the function of the structure identified by the red arrow?
Mobility
Protection
Reproduction
DNA transfer
Answer:
I'm not entirely sure, however, since no one has answered your question yet, I'll say A. Mobility
This thing probably moves around, and it doesn't look like it could protect it, or anything.
Answer:
The answer is Mobility.
Explanation:
Took the test.
Cytotoxic T cells protect the body by _____________.
A. secreting toxic substances that destroy pathogens
B. phagocytizing invaders
C. activating the complement system
D. making antibodies that float free in the body fluids
What does a bioprospector do?
Answer:
bioprospecting. The analysis of plants, animals, insects and other organisms in an ecosystem with high biodiversity for therapeutic candidate molecules and substances.
Explanation:
Answer:
It does the analysis of plants, animals, insects and other organisms in an ecosystem with high biodiversity for therapeutic candidate molecules and substances.
Explanation:
Can someone please help with these questions. Thank you
Answer:
87654321
Explanation:699999
Consider the numbers of species known to exist on Earth, including the numbers that are being discovered and
the numbers thought to be going extinct. What do these
numbers suggest about biodiversity on Earth?
Answer:
A high diversity of species is known to exist among insects and land plants; fewer species are known to exist among vertebrates, bacteria, algae, arachnids, Protists, nematodes, mollusks and crustaceans. However, much greater diversity is estimated to exist among insects, fungi, bacteria, algae, and arachnids. Vertebrates are the best-studied organisms but are relatively less diverse than other groups.
Explanation:
Consider the numbers of species known to exist on Earth, including the numbers that are being discovered and
the numbers thought to be going extinct. What do these
numbers suggest about biodiversity on Earth?
A study is done to compare the fuel efficiency of cars the first group of cars generally gets 35 miles per gallon the second if a car is generally gets about 50 miles per gallon based on the mean values of each group what inference can be made what else might a person to conclude from mean values
Answer:
The effeinty
Explanation:
how do mutations lead to a variation of traits with a population if organisms?
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
What valuable information was gained from Mendel's dihybrid crosses?
Select all that apply.
1. Not all traits are controlled by genes. In most plants, genes only determine traits that affect
flower color.
2. Statistical and probability methods can be used to determine how likely an offspring is to inherit
certain traits.
3. Genes are inherited differently in plants than they are in animals.
4. Inheritance of one trait does not affect inheritance of another.
Mendel's dihybrid cross proves that the inheritance of one trait does not affect the inheritance of another trait. Hence, option 4 is correct.
What is a dihybrid cross?When two different traits are crossed together then it is called a dihybrid cross. These two different traits are regulated by two different genes.
In Mendel's dihybrid cross, he did cross between round yellow and wrinkled grees. There are two traits, color, and shape. In the F1 generation, all seeds were round yellow but they were heterozygous. Round shape and yellow color are dominant traits.
Then he self-pollinated F2 generation and found four types of seeds that were round yellow, round green, wrinkled yellow, and wrinkled green in the 9:3:3:1 ratio. The cross is attached in the image below.
Inheritance of one trait does not affect the inheritance of another trait. Hence, option 4 is correct.
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anyome know the answer
Answer:
4.8beads/seconds is the rate of reaction
what does not pass through the stomata of leaves
Carbon dioxide and oxygen cannot pass through but move in and out
If you know that small sharks and large sharks are the top two consumers in a food chain, which of the
following pairs would start your food chain?
O dinoflagellates, ocean sunfish
O copepods, ocean sunfish
energy from sun, dinoflagellates
O energy from sun, copepods
Answer:
Dinoflagellates
Explanation:
Dinoflagellates are algae
Test One: If I breed a short fur, FF female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.
Since all these offspring only have one trait for long fur, this trait stays hidden in their DNA and is not expressed in their phenotype. All the offspring will have short fur.
Test Two: If I breed a short fur, Ff female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.
Test Three: If I breed a long fur, ff female with a long fur, ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring.
Answer:
test two:
some short fur and some long fur will be seen.
this is because in some cases, the offsprings have only have the trait for short fur or just one trait for long fur and so short fur is expressed in the phenotype. in other cases, the offsprings have only the trait for long fur and so long fur is expressed phenotypically.
test three:
all long fur is seen.
since all the offsprings only have the trait for long fur and no trait for short fur, long fur is expressed in the phenotype.
Assuming a diallelic gene coding for the trait and expressing complete dominance, 1) all short fur. 2)some short and some long fur. 3) all long fur.
According to the information that was provided, we can assume that the trait fur length is coded by a single diallelic gene
• dominant allele F codes for short fur
• recessive allele f codes for long fur
We can also assume that the gene expresses complete dominance.
What is complete dominance?It is the inheritance pattern in which the dominant allele completely masks the recessive allele.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant phenotype. The dominant allele is hiding the expression of the recessive allele.
Many genes show complete dominance.
Cross 1:
Parentals) FF x Ff
F1) 100% short fur
All short fur
Cross 2:
Parentals) Ff x Ff
F1) 1/4 FF + 1/2 Ff / 1/4 ff
75% short fur + 25% long fur
Some short fur, and some long fur
Cross 3:
Parentals) ff x ff
F1) 100% long fur
All long fur
Note: Due to technical problems, you will find the complete explanation in the attached files.
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Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Which phase of the cell cycle is helicase most likely active?
A) S
B) М
C) G1
D) G
Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Helicase is more active in the S phase of the cycle. Option A is the correct answer.
What are the events of the cell cycle?
The cell cycle consists of the interphase and the cell division phase, where the cell division takes a little time in comparison to the interphase. The parent cell spends the majority of its time in the cell cycle's interphase and less time in the cell division phase.
There are three phases in the cell cycle's interphase: G1, S, and G2. The cell grows in both the G1 and G2 phases, while the DNA replicates in the S phase.
Hence, helicase is an enzyme that is responsible for unraveling the double helix of DNA by breaking apart the hydrogen bonds between each base pair. Helicase is more active in the S phase of the cell cycle. Option A is the correct answer.
Learn more about the cell cycle here.
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is this karyotype from a male or female? how do you know ?
Also do they have down syndrome? How?
Answer:
Its a male, without down syndrome
Explanation:
The fact that it's a male is indicated from the presence of the Y chromosome. In order for this man to have down syndrome, he would have had 3 chromosomes at 21, which he doesnt, meaning he doesnt have down.
Respiratory system, circulatory system, what stuck, digestive system, and how do they work together?
Which region is directly near the edges of a continent?
a submarine canyon
a continental margin
a mid-ocean ridge
an atoll
Answer: a continental margin
Explanation:
Please help me!!! Timed!!
Answer:
Diploid
Explanation:
Plzzz help Why are females in control of sexual selection and the evolution of males?
Answer:
What i can say is that WE ARE NOT.
Explanation:
Sexual selection is mostly our choices bc we have the uterus and body parts to produce babies. Some men take advantage of that hence rapxe. The evolution of males is sometimes in our control bc we are trying to teach them not to rapxe.
Which two molecules are produced over the course of the light and dark reactions of photosynthesis?
glucose
water
carbon dioxide
pyruvic acid
oxygen
Viruses can be prevented by receiving a weakened form of the virus called a?
A)plastid
B)vaccine
C)antibiotic
D)fertilizer
a tick living
on the body of a deer is an example of:
1. mutualism
2. commensalism
3. parasitism
Answer:
3: Parasitism.
Ticks are parasites!
Which is the snowy owl's genus?
a) Scandiacus
b) Bubo
Answer:
bubo
Explanation:
Horned owls and eagle-owls
List 5 pairs of organisms that rely on each other to survive the Everglades ecosystem.
(Animal)
Answer:
American Alligator.
Banded Water Snake. ...
White-Tailed Deer. ...
Dolphin. ...
Florida Panther. ...
GIVING BRAINLIEST!!!!!
What adaptation of cactus helps it store water?
A) Large leaves
B) Red fruit
C) Strong roots
D) Thick stem
Answer:
D. Thick Stem
Explanation:
An earthquake causes a population of 10 deer with long tails to panic and move to a
population of 90 deer with short tails. Over time, the allele frequency for long tails
increases from 10% to 30%.
Match this scenario to its mechanism of evolution.
Answer:gene flow
Explanation:
Please Help I willl mark Brainlist Please
Answer:
4 I think
Explanation:
The cytoplasm is home to many activities of the cell as it contains molecules, enzymes that are crucial in the break down of the waste. The cytoplasm also assists in metabolic activities. Cytoplasm provides shape to the cell. It fills up the cells thus enabling the organelles to remain in their position.
