Which of the following was NOT a type of evidence Darwin had available in his time?
A. Comparative Anatomy
B. DNA
C. Fossils
D. Artificial Selection

Answers

Answer 1
DNA was not a type of evidence Darwin had available in his time!!

Related Questions

Which ball-and-socket joint is the most freely moveable joint in the body?

Answers

Answer:

c. Glenohumeral joint

Explanation: is correct (the Shoulder joint)

Which of the following is true about cells?

A. A cell’s components are all identical and perform the same function.

B. Cells have specialized components that all perform the same functions.

C. A cell has a single component that performs all of the cell’s different, specific functions.

D. Cells have specialized components that perform different, specific functions.

Answers

Answer:

D

Explanation:

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Human cells have _____ sets of DNA in each cell.


A) 2

B) 4

C) 1

D) 8

Answers

Answer:

See answer below.

Answer is verified.

Explanation:

Human cells have two sets of DNA in each cell.

And a total of 46 chromosomes in each cell.

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Human cells have two sets of DNA in each cell. Thus, the correct option is A.

What is DNA?

DNA stands for Deoxyribonucleic acid. It is considered the genetic material of most organisms. It consists of base pairs like adenine, thymine, guanine, and cytosine.

Human cells have two sets of DNA in each cell, one came from the paternal side while the other came from the maternal side.

Therefore, it is well described above.

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One of the following statements is correct about glycolysis:

A.Net gain of only 2 ATP.
B.Glycolysis in fermentation reaction requires more oxygen than glycolysis in aerobic respiration
C.Carbon dioxide is used during glycolysis to form ATP.
D.Only animals can carry on glycolysis.

Answers

Answer:

A.

Explanation:

Glycolysis produces 4 ATP molecules in total, however 2 ATP molecules are used to convert a glucose molecule into a new 6 carbon compound with 2 phosphates attached to it. So, the net yield of ATP is 2 molecules.

Answer:

A net gain of only 2 ATP

Explanation:

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Answers

Answer:

The answer is C, from hydrosphere to atmosphere

Answer:

C

Explanation:

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Which layer in the blood vessel is composed of smooth muscle, allowing it to dilate or constrict?

Tunica intima
*Tunica media
Tunica externa
Endothelium

Answers

Answer:

b. Tunica media

Explanation:is correct

Answer:

B. Tunica media

Explanation:

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Following the fusion of an egg cell and sperm cell, the resulting diploid cell divides by mitosis to create two new daughter cells. Each daughter cell contains pairs of chromosomes, with one set inherited from each parent.


Which of the following best describes the pairs of chromosomes that are present in each newly formed daughter cell?


Choose 1 answer:


A) The pairs are homologous chromosomes that have the same set of genes, but likely different variations of those genes.


B) The pairs are non-homologous chromosomes that contain different sets of genes.


C) The pairs are homologous chromosomes that have identical copies of every gene.

Answers

Answer: A

i have no idea why

The pairs are homologous chromosomes that have the same set of genes, but likely different variations of those genes. The correct option is A.

What are homologous chromosomes?

Among a pair of chromosomes with the very same gene sequence, loci, chromosomal size, and centromere location is referred to as a homologous chromosome.

One paternal and one maternal chromosome make up a homologous pair. In humans, the nucleus of a somatic cell contains 46 chromosomes.

Homologous chromosomes differ from sister chromatids because they are not identical and do not emanates from the same organism.

Sister chromatids are identical, side-by-side duplicates of each other that form as a result of DNA replication.

Homologous chromosomes do not pair together during mitosis. Homologous chromosomes line up end-to-end in mitosis so that when the cells divide, each daughter cell receives a sister chromatid from both members of the homologous pair.

Thus, the correct option is A.

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What is the role of knowing the Earth's history to mankind?​

Answers

Answer:

Earth history enables us to understand those changes which no human being has ever seen (or if they have, they didn't record it) and to relate them to modern changes. Such events include: The rise and extinction of the dinosaurs. The formation of the Grand Canyon.

Explanation:

Answer:

Earth history enables us to understand those changes which no human being has ever seen (or if they have, they didn't record it) and to relate them to modern changes. Such events include: The rise and extinction of the dinosaurs. The formation of the Grand Canyon.

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The active ingredient in which of the following drugs mimics a natural neurotransmitter?

Answers

Answer:

b. marijuana is correct

Explanation:

which organelle could be used to distinguish between a plant cell and an animal cell?

Answers

Answer:

Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

thinking about the components in pcr, do you think there are major differences in the process of dna replication between species?

Answers

The major difference in the process of DNA replication between species is the linear order of nucleotides, which can be amplified by PCR. This technique enables the amplification of specific DNA fragments.

The Polymerase chain reaction (PCR) is a technique widely used in molecular biology in order to amplify and thus identify small DNA fragments (approx. 1000 pb).

The PCR uses all materials required to carry out DNA replication: a thermostable DNA polymerase, primers (DNA oligonucleotides), deoxyribonucleotides (ddA, ddG, ddC, or ddT), and template DNA.

The template DNA indicates the linear order of nucleotides that will be added to the amplified DNA fragment, which is highly specific and may vary even between individuals of the same species.

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Fungi have chlorophyll.

True
False

Answers

False- unlike plants fungi to not have chlorophyl.

Why- Fungi do not need the sun to make food instead they break down their own food.

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How does a virus and viroid differ from each other?

Answers

Answer: The main difference between virus and viroids is that a virus is a small infectious agent, which can only replicate inside living cells whereas viroids are the smallest form of infectious agents, which only infect plants.

The main difference between virus and viroids is that a virus is a small infectious agent

What is ATP called after it loses its 3rd phosphate group?

Answers

When the terminal (third) phosphate is cut loose, ATP becomes ADP (Adenosine diphosphate; di= two), and the stored energy is released for some biological process to utilize.

Based on the video, do you think changes to the environment could still affect living things on Earth today? Explain your answer using information from the video to support your argument.

Answers

Answer:

Yes. Unicellular organisms died because of a change in temperature, which is an environmental change. If the environment on Earth changes too much, it will affect living things. If the changes are too drastic, life may not be able to survive.

Explanation:

Define: Heterogeneous Distribution, Modularity and Nestedness.

Answers

Explanation:

Nestedness is another computational approach that provides a description of groups of webs..

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Answer:

Heterogeneous Distribution, Modularity

Heterogeneity in statistics means that your populations, samples or results are different. It is the opposite of homogeneity, which means that the population/data/results are the same. ... For example, if everyone in your group varied between 4'3″ and 7'6″ tall, they would be heterogeneous for height.

Explanation:

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What makes social animals unique?

Answers

Answer:

In these species, members of the group depend completely on one another. Different animals within the group have different jobs. Therefore, group members must work together for the good of all. Most species of ants and bees are highly social animals.

Explanation:

In wolves, gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). The genes that control these traits are located on different chromosomes. The alpha male of the pack has the dominant phenotype for both traits and is heterozygous for both traits. The alpha female has brown eyes and a black coat; she is heterozygous for eye color. Which option represents gametes that would be made by the alpha female

Answers

The combination of gametes that will be produced by the Alpha female is Bg, Bg, bg and bg.

According to this question, two genes coding for eye color and coat color in wolves are involved. Gray coat color (G) is dominant to black coat color (g) while brown eyes (B) are dominant to blue eyes (b).

The alpha female of the pack is said to have a brown eyes and a black coat (gg) but she is heterozygous for eye color (Bb). This means that she posseses the following genotype: Bbgg.

According to Mendel in his law of independent assortment, alleles of a gene will segregate into gametes independently of one another.

This means that the alpha female with genotype (Bbgg) will segregate into the following combinations of gametes: Bg, Bg, bg and bg.

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the transport a very large molecules such as proteins​

Answers

Answer:

Very large molecules such as proteins are too big to move through the cell membrane which is said to be impermeable to them. The type of transport proteins present in a cell membrane determines which substances the membrane is permeable to. CO2 molecules pass directly through phospholipids. Glucose molecules travel through the proteins.

Articulations are classified by their function or structure. Which of the following is an example of functional classification?

Answers

Answer:

d. Synarthrotic joints  

Explanation:  is correct for the choices offered.

Why kharif crops cannot grow in rabi seasons?

Answers

Answer:

We know that kharif crops such as paddy need more water to grow healthy, which requires in rainy season. But in winter season , which does not requires so much, hence kharif crops cannot grow in this season healthy and properly. Therefore kharif crops cannot be grown in rabi season.

The plant roots containing nitrogen fixing bacteria are: *
(a) Maize
(b) Cotton
(c) Pea
(d) Wheat

Answers

The plant roots containing nitrogen fixing bacteria are

C. PEA

Plants of the Pea Family known as legumes, are some of the most important hosts for nitrogen-fixing bacteria, but a number of other plants can also harbour these helpful bacteria.

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What of the following best explains the pace and timing of evolutionary change?

A: Evolutionary change quickly and constantly occurs throughout time.

B: The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

C: Periods during which evolution occurred were always preceded by a catastrophe.

D: Long periods of stability were punctuated with periods of evolutionary change.

Answers

Answer:

B: The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

Explanation:

What of the following best explains the pace and timing of evolutionary change The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

Answer:

D: Long periods of stability were punctuated with periods of evolutionary change.

Explanation:

How is Wallace's view scientific

Answers

Wallace argues that changes in species are not a result of specific individual needs of organisms to adapt to their environment. Rather, "he states that some qualities of an individual may allow it to outlive another individual without those qualities."

Which of the following statements is TRUE during depolarization?

Answers

Answer:

a is correct

Explanation:

True or False: A positive ion and a negative ion will repel each other.

Answers

Answer:

FALSE     is correct

Explanation: Questions protected!

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How can using a dam as a source of freshwater also harm wildlife?
A. Dams help control floodwaters.
B. Dams provide drinking water.
C. Dams displace existing habitats.
Ο Ο
D. Dams provide water recreation.

Answers

Answer:

c

Explanation:

because its the only one that would be hurting wild life.

Using a dam as a source of freshwater can harm wildlife by displacing existing habitats. Therefore, option (C) is correct.

What are the negative impacts of dams?

Dams often require the creation of reservoirs, which can submerge large areas of land and alter the natural flow of rivers and streams. This can lead to the loss of important habitats for fish, mammals, and other wildlife that rely on rivers and streams for food, shelter, and reproduction.

In addition, changes in water temperature, dissolved oxygen levels, and water flow can negatively impact aquatic ecosystems downstream from the dam.

These impacts can be mitigated through careful planning and management, such as the creation of fish ladders and other structures to help fish navigate past the dam, and the release of water at appropriate times to mimic natural flow patterns.

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state the name of structure that is present in bacteria cells and in plant cells but absent in animal cell

Answers

Answer:

cell walls

Explanation:

Cell walls

It provides the cell with both structural support and protection, and also acts as a filtering mechanism. Cell walls are absent in animals but are present in most other eukaryotes including algae, fungi and plants and in most prokaryotes (except mollicute bacteria).

cell walls. provides the cell with structural support and protection.

how does a single genome code for so many types of tissues

Answers

Answer:

The genome of a cell contains in its DNA sequence the information to make many thousands of different protein and RNA molecules. A cell typically expresses only a fraction of its genes, and the different types of cells in multicellular organisms arise because different sets of genes are expressed.

The genome, which is the second layer, regulates gene access, allowing each cell type to activate its own unique genes while shutting off the majority of the others.

What is genome?

The complete set of DNA instructions present in a cell is known as the genome. The human genome is made up of 23 pairs of chromosomes that are found in the cell's nucleus and one tiny chromosome that is found in the mitochondria.

Everything a person needs to grow and operate is encoded in their genome. The DNA sequence in a cell's genome contains the instructions needed to create tens of thousands of different protein and RNA molecules.

Thus,  in multicellular organisms, distinct cell types develop because diverse sets of genes are expressed, even though a cell normally expresses just a portion of its genes.

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3.Which statement describes the major role of lipids within a cell?

Answers

Answer:

Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules. The three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.

Explanation:

The statement that describes the major role of lipids within a cell is they are the main structural components of membranes. The correct option is D.

What are lipids?

Lipids have three main biological activities in the body: they are essential signaling molecules, structural elements of cell membranes, and energy storage facilities.

Triacylglycerols (commonly known as triglycerides), phospholipids, and sterols are the three primary categories of lipids. Fats are subtypes of lipids that are typically composed of glycerol and fatty acid chains.

One sort of lipid, which includes fats, is a group of molecules that don't mix well with water. Hydrophobic, nonpolar, and primarily composed of hydrocarbon chains, lipids have a tendency to be.

Therefore, the correct option is D. They are the main structural components of membranes.

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The question is incomplete. Your most probably complete question is given below:

A. They cause DNA to replicate

B. They move RNA in the cytoplasm.

C. They catalyze chemical reactions in the cell cytoplasm.

D. They are the main structural components of membranes.

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