How can two physically healthy parents produce a child with Down syndrome and a second child with Klinefelter syndrome?
Which food preservation technique is Paul using?
Paul uses____ technique, which is the most modern technique of food processing and preservation. This technique uses____ rays to kills Insects, mlcrobes, bacteria, and fungi In food.
1. Freeze drying
2. Irradiation
3. Dehydration
__________
1. Alpha
2. Beta
3. Gamma
Answer:
Paul uses Irradiation. The technique uses gamma rays
Explanation:
Answer:
Agreed.
irradiation
gamma
Explanation:
BRAINLIEST!! 5 STARS AND A THANKS!!
Who finally provided enough evidence for the theory of plate tectonics to be widely accepted, and where was this evidence found?
Answer:
Alfred wegener was the one that provided the evidence for plate tectonics
Answer:
Alfred Wegener
Explanation:
German meteorologist Alfred Wegener is often credited as the first to develop a theory of plate tectonics, in the form of continental drift.
Describe the borders of Israel after the 1948 War?
Answer:
Israel borders Egypt, Jordan, Lebanon, Syria, and the Palestinian territories of West Bank and the Gaza Strip; it shares maritime borders with Cyprus.
Explanation:
yayy boom
Why is taxonomy important to scientists?
What is NOT a solid waste ? A.Methane B.Grass clipping and leaves C.old cell phones
Answer:
A. Methane
Explanation:
Methane is a gas not a solid. Every other answer choice is a solid.
Which of the following scenarios represents change to an ecosystem brought about by biotic factors?
a.
a wildfire caused by lightning striking a tree
b.
a flood caused by a severe storm
c.
a landslide caused by cattle overgrazing
d.
a volcano
Please select the best answer from the choices provided
A
B
C
D
Answer:
C
Explanation:
Explain why tongue rolling ability is a discontinuous variation
Since tongue rolling ability is determined by a single gene with two separate alleles—the dominant allele, which codes for tongue rolling ability, and the recessive allele, which codes for tongue rolling incapacity—tongue rolling ability is a discontinuous variation.
What is Tongue rolling ability?The hereditary characteristic known as tongue rolling ability controls whether or not a person can roll their tongue into a tube shape. This characteristic is frequently used as an illustration of a straightforward hereditary trait with discontinuous variation since there are only two possible outcomes: either a person rolls their tongue or they do not.
Either a person has the recessive allele, which prevents them from rolling their tongue, or they have the dominant allele, which allows them to roll their tongue. There is no intermediate or in-between trait, and the presence or absence of the dominant allele is a distinct, plainly observable phenotype.
Therefore, the capacity for tongue rolling is an illustration of a discontinuous variation.
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1. There are
domains.
1
2
3
4
Answer:
3
Explanation:
There are three domains of life, the Archaea, the Bacteria, and the Eucarya.
Answer:
There are 3 domains
Explanation:
the Archaea, the Eucarya, the Bacteria.
A student claims that the lac operon is an example of a mechanism that an organism uses to conserve energy. Evaluate the validity of the student's claim. The claim is invalid because the lac operon requires a bacterial cell to produce extra regulatory proteins and regulatory segments of DNA. The claim is valid because the lac operon allows a bacterial cell to shut down a metabolic pathway if it is not immediately needed. The claim is valid because the lac operon allows a bacterial cell to maintain constant levels of enzymes even when they are not immediately needed. The claim is invalid because the lac operon requires a bacterial cell to constantly produce the lac repressor protein even when lactose is not present.
Answer:
The claim is valid because the lac operon allows a bacterial cell to shut down a metabolic pathway if it is not immediately needed.
Explanation:
The lac operon is a cluster of genes which contain the same promoter sequence and are transcribed as a single messenger RNA (mRNA). This operon is inducible because the presence of lactose in the cell influences its transcription. Lactose can bind to the repressor of this operon, leading to a conformation change in the repressor, thereby preventing the repressor from binding to the operator and thus allowing transcription of the structural genes. After lactose addition, the β- galactosidase enzyme can break this carbohydrate into glucose and galactose, thereby there is no lactose able to bind with the repressor and therefore this operon shuts down. During transcription, the promoter of the lac operon binds both RNA polymerase and catabolite activator protein (CAP) and cyclic AMP (cAMP) complex.
Difference between phagocytes and red blood cells
Which of the following is a property of water? (4 points)
It can dissolve only acids.
It expands when it melts.
It exists naturally in only in two states.
It has a low surface tension.
It stores heat energy well.
Answer:
QUESTION NUMBER THREE DONEE YA BOIIIIIIIIII
Explanation:
Based on the cladogram shown in the
image, which group has a common
trait that all the other groups share?
Answer: I put Mammals, The victim was not stubbed.
Explanation: im not really sure about but the final answer for the presentation/assignment is "Professor Astro used a cougar attack in the kitchen"
in prophase 1 of meiosis, crossing over results in
Answer:
Crossing over results in Genetic Recombination.
Explanation:
Why don’t rivers run straight?
Answer:
Rivers don't run straight because water flows in the least path of resistance
Explanation:
It is small disturbances in topography that set off reactions that alter the path of a river Any kind of weakening of the sediment on one side of a river due to animal activity it could also be because of soil erosion, or human activity can draw the motion of the water towards that side.
when an organism reproduces through asexual reproduction, how many parent organisms contribute DNA to the offspring?
Answer:
Asexual reproduction produces offspring from just one parent. These offspring are genetically identical to that one parent.
Explanation:
Which of the following is NOT a primary mineral?
A. Mica
B. Feldspar
C. Quartz
D. Limestone
Answer:
D
Explanation:
limestone isn't a primary mineral
New alleles can arise in both asexual and sexual reproduction.
Which of the following statements is TRUE based on the disadvantages of sexual and asexual reproduction.
A- Gametogenesis is the only source of genetic variation for sexual reproduction
B- This answer choice is wrong
C- Mutations are the only source of genetic variation for asexual reproduction
D- Meiosis is the only source of genetic variation for sexual reproduction
Answer:
C - Mutations are the only source of genetic variation for asexual reproduction
Mutations are the only source of genetic variation for asexual reproduction.
What is mutation?
A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.
Germline mutations (that occur in eggs and sperm) can be passed on to offspring, while somatic mutations (that occur in body cells) are not passed on.
A mutation is never so advantageous in real life that it makes someone a superhero or does anything strange like give them wings. There are numerous explanations for why mutations typically don't have significant effects.
Therefore, Mutations are the only source of genetic variation for asexual reproduction.
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What ratio of plants in the offspring would you predict from a Yy x Yy cross?
Answer:
The correct answer is -
The genotype of offspring - 1:2:1 (YY:Yy:yy)
The phenotype of offspring - 3:1 (dominant trait: recessive trait)
Explanation:
In this question, it is stated that there is a cross between Yy and Yy. By the genotype of the parents, we can say that Y is dominant for a particular trait and y is recessive and the parents are in the heterozygous condition in this cross. The gametes these parents will produce are - Y and y and Y and y
then the cross of Yy and Yy would be -
Y y
Y YY Yy
y Yy yy
Offspring from this cross are YY, Yy, Yy, and yy which means the genotypic ratio is - 1:2:1 and the phenotypic ratio is - 3:1 as three out of four are dominant.
Why is the population of different deciduous tree species limited during winter time?
Answer:
Because trees don't produce food during the winter, they don't have the energy that it takes to maintain their leaves. ... This chemical triggers the tree to shed its leaves and to halt all growth to save energy.
Explanation:
ASAP Arizona deserts have been transformed by: chemical fertilizers use of pesticides irrigation canals recycling plants
this is all the points i have 88
Answer:
irrigation canals
Explanation:
Answer:
irrigation canals
Explanation:
Tsunami waves are caused by earthquakes in the ocean floor. As the waves approach the shore, they usually grow in height. When this occurs, which aspect of the wave is changing?
A.
amplitude
B.
direction
C.
frequency
D.
speed
E.
wavelength
Answer:
LETTER A. AMPLITUDE
Explanation:
Got it right on the test
What is the MAIN difference between prokaryotic (bacteria) cells and eukaryotic cells?
A. Presence of Cell membrane
B. Presence of Nucleus
C. Presence of Cell Wall
D. Single-Cell vs Multicellular organisms
Answer:
Single cell vs Multicellular organisms
Explanation:
A prokaryote is a single celled organism such as bacteria, whereas eukaryotes are multicellular beings, such as humans and other forms of life made up of multiple cells.
Which is a valid claim about how meiosis I differs from meiosis II?
Answer:
Homologous pairs of cells are present in meiosis I and separate into chromosomes before meiosis II. In meiosis II, these chromosomes are further separated into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.
Explanation:
Hope this helps pls mark brainliest!!!
What are some warming behaviors an animal might perform to warm its body temperature up?
Evidence exists that during the millions of years in which the Grand Canyon formed, the canyon divided a single population of tufted-eared squirrels into two populations. One of these squirrel populations, the Kaibab squirrel, now lives in isolation from the other tufted-ear squirrels on the North Rim of the canyon. The other population, the Abert's squirrel lives on the South Rim. Some biologists think that the two populations of squirrels have evolved into two separate species. Other biologists think that the Kaibab squirrel is a subspecies of the Abert's squirrel.
Answer:
A few of the squirrels manage to cross the canyon and breed with the squirrels on the other side.
Explanation:
The formation of the canyon divide the population of the tufted ear squirrels into two different population or species of the squirrels. One is the Kaibab squirrel which lives in the north Rim of the canyon while the other is the Albert's squirrel that lived in the South Rim.
The Kaibab squirrel has a black belly, white tails and tufted ears while the features of the Albert's squirrel is that it has white belly, white tail and tufted ears.
Now the factors that could make the evolution or the formation of the squirrel population in two different species less likely is the few of the squirrels might have crossed the Grand Canyon and moved to the other part and breeded with the squirrels there. So both the species have somewhat similar features.
When a crocodile has birds in its mouth, what symbolic relationship does it represent?
Answer:
The symbiotic relationship between the crocodile and the plover bird is exemplary of two organisms working together. The plover bird flies inside the crocodile's mouth, which may seem dangerous for the bird and food for the crocodile
Explanation:
The diameter of a circle is 6 miles. What is the circle's circumference?
Answer: C=18.85
Explanation: c/circle, hope this helped
i just need these three labeled and i’m good lol
A(n) what is a chemical produced by one animal to influence the
behavior of another animal of the same species?
Explanation:
The answer is ( faramones). for mating purposes..