Which examples of artificial selection are caused by human activity without people even realizing it?
a. an increase of tuskless Asian elephants because of ivory poaching
b. growing human organs from pig stem cells because of increased research on stem cell therapy
c. a decrease in rams’ horn size because of hunters’ preference for long-horned rams
d. cows producing milk with more protein because of genetic engineering
e. chickens producing more meat because of selctive breeding

Answers

Answer 1

an increase of tuskless Asian elephants because of ivory poaching, a decrease in rams’ horn size because of hunters’ preference for long-horned rams

Answer 2

Answer:

a,an increase of tuskless Asian elephants because of ivory poaching,

c,a decrease in rams’ horn size because of hunters’ preference for long-horned rams

Explanation:


Related Questions

is a dragon fly a insect

Answers

Answer:

Yes

I hope this helps!

Fats are the predominant forms of a class of biological molecules called _______, which also includes fatty acids and steroids, among other molecules. These biomolecules readily dissolve in _______ solvents such as hexane and chloroform. Because of their insolubility in water, fats and other biomolecules in this class are said to be_______. Triacylglycerols, also known as triglycerides, are a storage form of fat found in adipose tissue that consist of glycerol bound to_______. These fats are categorized based on the bonding of the carbon atoms in the chain. Fats that contain chains with no double bonds are classified as_______ , whereas those that contain double bonds in the carbon chain are _______.

Answers

Answer:

1. Lipids

2. Non-polar

3. Non-polar

4. Fatty acids

5. Saturated fats

6. Unsaturated fats

Explanation:

LIPIDS are one of the four major biomolecules in living systems. A form of lipids are fats which constitute most lipids i.e. predominant. Lipids also includes fatty acids, steroids and other molecules.

Lipid biomolecules readily dissolve in POLAR solvents such as hexane and chloroform. Because of their insolubility in water (polar solvent), fats and other biomolecules in this class are said to be NON-POLAR.

Triacylglycerols, also known as triglycerides, are forms of fat that is composed of a glycerol molecule bound to three molecules of FATTY ACIDS.

Based on the bonding of the carbon atoms in the chain, fats that contain chains with no double bonds are classified SATURATED FATS, while those that contain double bonds in the carbon chain are UNSATURATED FATS.

A colourless, odourless, tasteless, gas that is the most common element in the atmosphere.
a. nitrogen
b. phosphorus
c. carbon
d. oxygen

Answers

Answer:

Nitrogen

Explanation:

Answer:

its a for what i know hope this helps

A student views 2 cells through his microscope. In cell A, he observes it to be rather large and has a lot of structures including a nucleus in it that make it complex in cell B, he observes that it is much smaller than cell A and does not have many structures inside which he claims makes it less complex What is true about these cells?
A. Cell A is a prokaryote while cell B is a eukaryote

B. Both cells are eukaryotes

C. Both cells are prokaryotes

D. Cell A is a eukaryote while cell B is a prokaryote

Answers

Answer: The answer is D

prokaryotes are a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles

The water cycle describes how water moves through the earth's crust atmosphere and
oceans. Heat from the Sun causes liquid water to evaporate from rivers, lakes and oceans
and it becomes a gas called water vapour.. As the gas rises, it condenses and
to create droplets.
Water returns to the ground as solid hail and snow or liquid rain and sinks into the earth.
Below the ground it forms
where water is held between grains in rock
layers, and
Where aquifers intersect or cut the surface of the ground
the liquid water flows out to form
and
Differences in
elements, such as oxygen, can be used to estimate the and
of
water. A process is an event or series of events that cause a change to occur.

Answers

Answer:

nose picks

Explanation:

lol

Answer:

see the answer above

Explanation:

what is thesaurus and online resources? ​

Answers

Answer:

thesaurus is a book that is filled with all types of synonyms for words

synonyms are words that are different but same in meaning

eg: yummy

another word for yummy is delicious

so delicious is a synonym that is included in the book named thesaurus

hope it helps

; )

Explanation:

11. An individual who is heterozygous for rob(13;14) is at increased risk for having a child affected by Patau syndrome. Please briefly explain why.

Answers

Answer:

because of Chromosome-13 rearranges with with other chromosome.

Explanation:

To understand and be and be able to solve or tackle this question effectively, there is need to know the meaning of the important terms in this question/problem.

- Robertsonian translocation: The term "Robertsonian translocation" simply refer to some kind of disorder in the chromosome in which a different kind of chromosome attach itself to another kind of chromosome, that is to say we have more than two fusion of chromosome that are different on chromosome 13, 14,15,21 and 22.

- Patau syndrome: The syndrome known as " Patau syndrome" is also refer to as Trisomy 13. The syndrome is a kind of abnormalities on the 13th chromosome known as chromosome 13. Patau syndrome patient will have more than two[usually three] kinds of chromosome.  

"An individual who is heterozygous for rob(13;14) is at increased risk for having a child affected by Patau syndrome. " is TRUE

A defect in  chromosome 13, that is to say the Robertsonian translocation on the 13th chromosome is what causes Patau syndrome. The Robertsonian translocation occurs by addition and subtraction of chromosomes, when there is addition on chromosome 13 or say the rearrangement of chromosome-13  with other chromosome, then, the individual's offspring has the tendency of developing Patau Syndrome.

help plz i will do anything

Answers

Answer:

B

Explanation:

Inertia is the tendency of an object to resist changes in its state of motion and it varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has.

How quickly must non-frozen ready to eat foods be consumed

Answers

a day because if they are let out for over a day they will go bad

in order to release energy through aerobic processes like cellular respiration, cells need to have access to which of the following gasses?
A
Nitrogen
B
Water vapor
C
Carbon Dioxide
D
Oxygen

Answers

It’s oxygen Hhhhhhhgg

Look at your model and think about the relationship between oxygen and carbon dioxide in the sealed jar. Which of these statements is true?

Plants release only carbon dioxide during photosynthesis.

Plants use oxygen during photosynthesis.

Plants and animals use oxygen during respiration.

Plants and animals release oxygen during respiration.

Answers

Answer:

Plants use oxygen during photosynthsis.

Explanation:

Oxygen and carbon dioxide in the sealed jar relationship between oxygen and carbon dioxide is that  Plants and animals use oxygen in respiration, hence option c is correct.

What is respiration?

Water and carbon dioxide are converted into oxygen and glucose in photosynthesis and plant uses glucose and releases oxygen as a byproduct.

Oxygen and glucose are converted to water and carbon dioxide in cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which are turned into energy.

Carbon is taken out of the atmosphere by photosynthesis and put back in by cellular respiration.

Therefore oxygen and carbon dioxide have a relationship in respiration, hence option c is correct.

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DNA undergoes the process of replication to produce new strands of identical DNA before cell divisions. Describe the basic dna replication. I will give you brainliest

Answers

Answer:

Please mark as Brainliest

Explanation:

Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication

Step 1 Replication Fork Formation. Before DNA can be replicated, the double stranded molecule must be unzipped into two single strands

Step 2 Primer Binding. The leading strand is the simplest to replicate

Step 3 Elongation

Step 4 Termination

What conclusions can you make
about who might have been at the
scene of Anna's death? Explain.

Answers

What excerpt or movie you are referring to ? Because this isn’t enough information, is it in a novel

Which conditions need to be in balance for cells to function? Check all that apply.

Answers

Blood sugar
Food intake
Body water
Body temperature
Body mass

Hope this helps!

which fungi has single cell​

Answers

Yeasts are known as single celled fungi. Around 1,500 species of fungi are recognised as yeasts.

DNA libraries are useful for identifying and isolating eukaryotic DNA fragments of interest in research. Select the ways in which genomic and cDNA libraries differ.

a. Genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism.
b. cDNA libraries contain only the sequences from genes that are expressed in an organism.
c. cDNA libraries are the DNA fragment collections that are stored and propagated in host cells through cloning.
d. cDNA libraries contain more sequence information than genomic libraries.

Answers

a is correct because for cDNA first we need to have out mRNA sequence and we know that in prokaryotes they dont have mRNA and splicing mechine

The ways in which genomic and cDNA libraries differ is that the Genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism. Thus, the correct option for this question is A.

What do you mean by Genomic libraries?

Genomic libraries may be defined as a group of overlapping segments of genomic DNA that is significantly cloned into a backbone vector, which statistically includes all regions of the genome of an organism efficiently in order to function normally.

On contrary, cDNA libraries may be characterized as the collection of cloned DNA sequences that are complementary to the mRNA and were remarkably extracted from an organism or tissue in order to stimulate its function.

Therefore, genomic libraries are difficult to express in prokaryotic cells, which lack a splicing mechanism is one of the ways in which genomic and cDNA libraries differ.

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The part of the cell that is like your brain and gives instructions to the cell is
A.nucleus
B.protoplasm
C.membrane
D.fat cells
Help please

Answers

I think is nucleus

I hope it helps

how do mutations affect our communications?​

Answers

Explanation:

When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.Over time, a mutation might take place in one of the descendant cells, causing increased activity of a positive cell cycle regulator. The mutation might not cause cancer by itself either, but the offspring of this cell would divide even faster, creating a larger pool of cells in which a third mutation could take place.

Identify events that contribute to the termination of a response in the GPCR, or 7TM receptor, pathway. Select all that apply.

Answers

Answer:

Multiple choices:

1. G? dissociates from the G?? subunits.

2. The ligand dissociates from the receptor, which resumes its inactive conformation.

3. The receptor is inactivated by phosphorylation of Ser or other residues on its intracellular domain.

4. G? releases GDP and binds GTP.

5. G? hydrolyzes GTP to GDP and Pi.

Answers

The ligand dissociates from the receptor, which resumes its inactive conformation

The receptor is inactivated by phosphorylation of Ser or other residues on its intracellular domain

G? hydrolyzes GTP to GDP and Pi

Explanation:

The GPCRs known in full as G protein-coupled receptors are viewed by many as the largest group of membrane proteins that are found in human genome. They share a common architecture. The seven-transmembrane (7TM) receptors are mostly used interchangeably with the GPCRs even though there are known receptors that have seven membrane domains and do not just signal through the G proteins.

What are the dimensions of the human skeleton?

Answers

Answer

Human skeleton, the internal skeleton that serves as a framework for the body. This framework consists of many individual bones and cartilages. There also are bands of fibrous connective tissue—the ligaments and the tendons—in intimate relationship with the parts of the skeleton. This article is concerned primarily with the gross structure and the function of the skeleton of the normal human adult.

,

When you get home from school, you decide to make some ramen noodles for an after school snack. You notice that the pack of ramen calls for 3 cups of water per pack. You add and heat up the water and you dump your ramen in the pot. You let the ramen noodles cook in the water for 5 minutes. As your are straining your ramen noodles, you notice the noodles are larger and there is less water in the pot. Explain what process just happened and why. How does this relate to the process of
cell?

Answers

Answer:

Osmosis.

Explanation:

Osmosis occurs in the noodles because the water moves inside the noodles which make them swells. Osmosis is a process in which particles moves from the external environment into the cell through a semi permeable membrane. The water present goes inside the noodle and the noodles increases in size just like cells when the water moves inside the cell it swells due high concentration of water.

Answer:

osmosis

Explanation:

Which of the following is an example of a nonmetallic mineral?
a sulfur
b. lead
c. aluminum
d. gold
Please select the best answer from the choices provided
A B C D

Answers

Answer:

a. sulfur

Explanation:

Sulfur is an example of a nonmetallic mineral

Non-metallic mineral

Non-metallic minerals are the minerals that do not contain metals, eg limestone, mica, coal etc. Such materials lack metallic characteristics like good electric and thermal conductivity, luster, rigor and malleability.

Sulfur is a non-metallic element with atomic number 16. It is considered as non metal because:

It is poor conductor of heat and electricity. Its density is lower than that of all metals. The electronegativity of sulfur is very high as compared to other metals. It is multivalent atom which is tasteless and odorless.

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At the end of glycolysis, there is a net gain of _____ ATP and 2 molecules of ________ are made.

Question 3 options:

4, NAPH


2, pyruvic acid


4, glucose


2, NAD+

Answers

Answer:

Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH.

Which of the following is not one of the three steps (processes) involved in urine formation?

Answers

The following is not one of the three steps (processes) involved in urine formation - Erythropoietin production.

Erythropoietin

It is a hormone that has no role in urine production. The steps of urine production are:

glomerular filtration - the filtration of blood, which is carried out by the glomerulus tubular reabsorption - The tubular epithelial cells in different segments of the nephron perform absorption (reabsorption) either by active or passive mechanismstubular secretion - helps in the maintenance of an ionic and acid-base balance of body fluids.

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What is meant by the concept of development?

Answers

Answer:

A process that creates growth, progress, positive change or the addition of physical, economic, environmental, social and demographic components.

Except for a pairing of sex chromosomes, homologous
chromosomes_______.

a. carry the same genes
b. are the same shape
c. are the same length
d. all of the above​

Answers

Answer:

Homologous chromosomes carry the same genes and have the same shape and length, so all the choices are correct.

Explanation:

The homologous chromosomes are so called because each of them has the same DNA molecule, giving rise to the same genes, distributed in the same location within the chromosome.

Somatic cells are diploid, which means that the genetic information that determines specific characteristics is distributed in pairs. Each of the chromosomes that form a pair comes from the father and mother, and the members of a pair are known as homologous chromosomes.

The homologous chromosomes are characterized by having the same shape and size, and contain the same genes, although the information contained in them —the alleles— may be different. Hence the possibility that one allele is dominant and another recessive on two chromosomes of a pair.


Find, in km/h, the rate at which a car travels if it
goes 38.5km in 35 min.​

Answers

Use this to help you. So here velocity is not given… so we have to calculate velocity of the car from given data. Car travel 60 km in 35 minutes. Frist of all we have to convert 35 minutes in hours by deviding 35 to 60 hour = 35/60

Next we have to calculate distance in kilometres so distance =velocity ×time.

Velocity =distance / time

Velocity =60/(35/60)

Velocity=3600/35

Distance = velocity ×time

In one hour… it will travel…

Distance =(3600/35) ×1.

By dividing you will get the answer…hope it will

What is the keystone species

Answers

Answer:

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

Explanation:

Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Explanation:

The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.

Describe how a rainforest can reach a point when it cannot be restored by secondary ecological succession

Answers

Answer:Although the secondary forest will be low in diversity and poorly developed, the forest cover will be adequate for some species to return (assuming they still exist).  The solution must be based on what is feasible, not overly idealistic, and depends on developing a new conservation policy built on the principle of sustainable use and development of rainforests. Beyond the responsible development of rainforests, efforts to rehabilitate and restore degraded forest lands along with the establishment of protected areas are key to securing rainforests for the long-term benefits they can provide mankind.

Explanation:

i lloke dit up online because i have not did this yet

A very high damaged leads to no restoration of rainforest by secondary ecological succession.

A rainforest can reach a point when it cannot be restored by secondary ecological succession when the large portion of the rainforest is destroyed and most of diversity is vanished. At this time, restoration is impossible due to very high damages.

Ecological resilience is the ability of an ecosystem to be restored through secondary ecological succession after a severe disturbance. Rainforest have a high biodiversity that helps it to resist damage but at a certain limit so we can conclude that very high damaged leads to no restoration of rainforest by secondary ecological succession.

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Identify your favorite meal and explain where each of the four molecules of life can be found.

Answers

Answer:

Spaghetti.  Wheat is in the noodles and is found it a field. Tomatoes is the sauce and is grown at a farm. Cows or chicken is used for the meatballs and the are on a farm. And these all have mass, atoms, and nutrients to help your body grow and be strong.

Explanation:

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