Answer:
Molecular genetic approaches to the study of plant metabolism can be traced back to the isolation of the first cDNA encoding a plant enzyme (Bedbrook et al., 1980), the use of the Agrobacterium Ti plasmid to introduce foreign DNA into plant cells (Hernalsteens et al., 1980) and the establishment of routine plant transformation systems (Bevan, 1984; Horsch et al., 1985). It became possible to express foreign genes in plants and potentially to overexpress plant genes using cDNAs linked to strong promoters, with the aim of modifying metabolism. However, the discovery of the antisense phenomenon of plant gene silencing (van der Krol et al., 1988; Smith et al., 1988), and subsequently co‐suppression (Napoli et al., 1990; van der Krol et al., 1990), provided the most powerful and widely‐used methods for investigating the roles of specific enzymes in metabolism and plant growth. The antisense or co‐supression of gene expression, collectively known as post‐transcriptional gene silencing (PTGS), has been particularly versatile and powerful in studies of plant metabolism. With such molecular tools in place, plant metabolism became accessible to investigation and manipulation through genetic modification and dramatic progress was made in subsequent years (Stitt and Sonnewald, 1995; Herbers and Sonnewald, 1996), particularly in studies of solanaceous species (Frommer and Sonnewald, 1995).
If a person wanted to learn more about the genetic material of plant and animal cells, where would they look? A) on the cell wall / B)inside the chloroplasts / C) in the nucleus / D) in the lysosomes
Answer:
c
Explanation:
for the genetic code is contained in the nucleus.
but this dose not apply to cells without a nucleus e.g. red blood cells...
If a person wanted to learn more about the genetic material of plant and animal cells, where would they look? A) on the cell wall / B)inside the chloroplasts / C) in the nucleus / D) in the lysosomes
Answer: (C in the nucleus)
btw K12 answer i got it right
is sleep deprivation inherited or spontaneous
Answer:
inherent
Explanation:
its most likely inherited
Oxygen _____.
breaks down food into energy
is found in healthy bones and teeth
is an organic element
is an important element in DNA
Answer:
first one
Explanation:
can you help me with my question Which of the themes of Hawthorne's "Dr. Heidegger's Experiment" is illustrated by this passage? Paragraph 36: The most singular effect of their gayety was an impulse to mock the infirmity and decrepitude of which they had so lately been the victims. A. Gayety produces an impulse to mock. B. It is a great release to look back on our problems happily C It is human nature to mock or make light of problems we have been delivered from I need to know as soon as possible
Cottontail rabbits closely resemble the fall and winter plants in which they hide
Answer:
In earlier generations, the rabbits that looked most like their surroundings survived and reproduced.
Explanation:
The cotton-tailed rabbits consist of 20 species that are found in America and have stubby tales with white under them. They're distributed over north, central, and southern America. They live in nests called forms, have an average life span of 2 years. Due to their camaflugeous nature, they change their coat color twice every year to protect themselves from predators.difference between parallel venation and reticulate venation
this is where you can get
The difference between parallel venation and reticulate venation is in parallel venation, the vein of the leaf blade is in a parallel pattern, and in reticulate the vein of the leaf blade is a net or web-like structure.
What is venation?Venation is the pattern of veins present in the leaves. There are different patterns of veins present in the leaves, parallel venation, for example, banana leaf, and reticulate venation, for example, papaya leaf.
Thus, In contrast to reticulate venation, where the vein of the leaf blade is arranged in a net-like pattern, parallel venation has the vein of the leaf blade arranged in a parallel pattern.
Learn more about venation
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which key process in biology is explained in the diagram above?
Answer:
ok
Explanation:
Hi I think the answer is bit C but I am not sure
Some one please help
1. Cell
2. Blood
3. Cells
4. Epithelial
5. Tissues
6. Stomach
7. Organs
8. Digestive
9. Organism
10. Human
Answer:
1. cell
2. blood
3. cells
4. epithelial
5. tissues
6. stomach
7. organs
8. digestive
9. organism
10. human
Explanation: Hope this was helpful....
help me please i have 2 mins left (science)
Answer:
half of the moon's visible surface
<3
Answer:
A: Half of the moon's visible surface
What is the importance of neutral variation in evolution?
A trait that is neutral in one environment may be advantageous in another.
It is usually removed from the population by natural selection due to its deleterious phenotypes in the environment.
A trait that is neutral will most likely be removed from the gene pool.
It will cause for a population to risk decline and extinction.
Answer:
A trait that is neutral in one environment may be advantageous in another.
Explanation:
Neutral variation refers to the variation (either genetic or phenotypic variation) which is unaffected by natural selection. Neutral variation is known to increase genetic variation, which is a prerequisite to evolutionary change. An allele may be neutral in one environment and beneficial (or deleterious) in another. In consequence, neutral variation in one environment may increase the response to selection in different environmental conditions.
Plzz Help!! Do not do it for the points plz i really need help on this!!!!!!!
Answer:
All alleles on the X chromosome are dominant
Explanation:
This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. In a sex-linked disease, it is usually males who are affected because they have a single copy of X chromosome that carries the mutation.
Which statement about the effects of natural events and human activities is true?
A.The environment is not usually affected by natural events
B.Human activities and natural events can damage the environment.,
C.Natural events always have a positive impact on the environment.,
D.All human activities change the environment in a negative way.
Answer:
B. Human activities and natural events can damage the environment.,
Explanation:
Human activities are those activities carried out by a human being. The environment is being degraded daily as a result of the activities of man as well as natural occurrences e.g earthquake, tsunami, wild fire etc.
Human activities also called anthropogenic activities that damage the environment include sewage pollution, burning of fossil fuels, oil spillage etc. Hence, according to this question, human activities and natural events can damage the environment.
GIVING BRAINLIEST!!!
Which air temperatures usually result in snow and other forms of solid precipitation?
A) Freezing air temperatures
B) Cool air temperatures
C) Hot air temperatures
D) Warm air temperatures
Answer: B) Cool air temperatures
Explanation: Snow requires temperatures at the ground to be near or below freezing.
3. What causes genetic variation? Select all that apply.
asexual reproduction
crossing
over
mitosis
independent assortment
Answer:
Crossing over
Independent assortment
Waste water is"________" by bacteria in the secondary treatment.
killed
digested
ignored
heated
Help ASAP!!!! 20 points.
Answer:
5= mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.
okay this is the question please answer if you know it because I'm not sure if it's a. or d. and thxxx :)
Answer:
D!!
Explanation:
Plzz Help!! Thanks!!
which of the following would be the best example of adaptive radiation, where a species evolves into different forms and fills different niches
Answer:
B
Explanation:
I think so
4. What is soil conservation?
Answer:
The prevention of loss in the most top layer of soil from the erosion or maybe prevention of deducted fertility
NEED HELP ASAP PLEASE 20 POINTS
Answer:
False
False its faster! Hope this helps! More information here! Answer: An area going through secondary succession reaches its climax community faster because the area begins with some soil and some plant and animal species. An area that goes through primary succession, on the other hand, begins with no soil and no organisms, so reaching the climax community takes longer.
Explanation: False its faster! Hope this helps! More information here! Answer: An area going through secondary succession reaches its climax community faster because the area begins with some soil and some plant and animal species. An area that goes through primary succession, on the other hand, begins with no soil and no organisms, so reaching the climax community takes longer.
3. You are studying a population of pangolins (a scaly anteater), and you determine that there are two scale phenotypes: a thick scale that is dominant to a thin scale. You also find that thick-scaled individuals are better able to survive encounters with predators.
What evidence would you need in order to determine if this selective advantage is changing the population? (1 point)
-The number of individuals displaying each phenotype in the current generation.
-The number of individuals displaying each phenotype in the offspring.
-The number of individuals that survive predator encounters.
-The number of individuals displaying each phenotype in both the current generation and the offspring.
Answer:
The number of individuals displaying each phenotype in both the current generation and the offspring.
Explanation:
The number of individuals displaying each phenotype in both the current generation and the offspring. The correct option is 4.
What is phenotype?The phenotype is the set of observable characteristics or traits of an organism in genetics.
The term encompasses the organism's morphology, developmental processes, biochemical and physiological properties, behaviour, and behavioural products.
To see if the thick scale phenotype's selective advantage is changing the population, we must compare the frequency of the thick scale phenotype in the current generation to its frequency in the next generation.
This would necessitate data on the number of people who exhibit each phenotype in both the current generation and their offspring.
As a result, the evidence we require to determine whether the selective advantage is changing the population is "the number of individuals displaying each phenotype in both the current generation and offspring."
Thus, the correct option is 4.
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Effects of heart disease
What are the effects of heart disease ?
Answer:
hope the answer helps this is what I understand
Yellow-eyed salamanders have been cited as an example of Batesian mimicry; their orange body color and yellow eyes mimic the coloration of the toxic California newt. Although the salamanders are palatable, their mimicry of a unpalatable species tends to prevent predators from attacking. In a follow-up study, Kuchta et al. observed the reaction of Western scrub jays (predators with toxic newt experience) when presented with both a yellow-eyed salamander and a closely related species after being presented with a toxic newt. What was significant about this study
Answer:
It was a follow-up controlled experiment that showed how a species can influence selection in another species.
Explanation:
A follow-up (cohort) study is a type of study followed over time in order to determine the development of a particular outcome. Moreover, a controlled experiment is one in which conditions are controlled by the researcher, and thereby it is easier to determine the incidence of the outcome. In the case above described, researchers performed a follow-up controlled experiment in which they measured how a species can influence selective processes undergone by other species.
what is the endocrine system and how does it work
HELP due today in 5 min DONT G O O G L E USE or I’ll get an F
Answer: Waste managment and how safe the nuclear plants can be. They can really harm people and the enviorment depending on where it is.
Explanation:
outline how the nephrons carry out their processes (4marks)
HELPPPP PLS ASAP
In sexual reproduction, a zygote is
A the product of fertilization of an egg by sperm
B the gamete responsible for the sex of the offspring
C.an egg that has not been successfully fertilized
D the final stage before the birth of an offspring
Answer:
A the product of fertilization of an egg by sperm
Answer: A
the product of fertilization of an egg by sperm.
Explanation:
Hope this helped
The dew point is the point at which the
water vapor beings to fall out of the air?
True or
False
Answer:
The dew point is the temperature when water will start to condense out of the air. When air is saturated as much as possible with water vapor it is at the dew point. Air that is holding less vapor than it actually could is below the dew point
which of the following is not considered a natural resource a.plastic b.gold c.titanium d.coal
Answer:
Gold
Explanation:
If the universe is expanding, why aren't the stars in the night sky fading away?
Answer:
This sounds poetic
If this is an actual question the stars are never ending so the more it expands the more it reveals more