Answer:
The structure of ecosystems can be visualized with ecological pyramids, which were first described by the pioneering studies of Charles Elton in the 1920s. Ecological pyramids show the relative amounts of various parameters (such as number of organisms, energy, and biomass) across trophic level
Explanation: hope it helps
Answer:
Explanation:
A pyramid of numbers shows graphically the population, or abundance, in terms of the number of individual organisms involved at each level in a food chain. This shows the number of organisms in each trophic level without any consideration for their individual sizes or biomass. The pyramid is not necessarily upright
The difference between z and 8
PLEASE HELP ASAP
A diagram of meiosis I is shown below.
At which stage of meiosis I does the exchange in genetic material between homologous chromosomes result in recombinant chromosomes?
prophase I
metaphase I
anaphase I
telophase I
Answer:
The correct answer is - prophase I
Explanation:
Crossing over or recombination is the event that takes place during the pachytene stage of Prophase I of Meiosis I. During this event, the exchange in genetic material between non-sister chromatids of homologous chromosomes results in the recombination of the genetic material or recombinant chromosome.
Prophase I is the first stage which is characterized by the condensation of the chromosome and form tetrad and appeared to be X like structure in the cell and followed by the crossing over or genetic exchange of homologous chromosomes.
Which of the following is true about budding? Check all that apply, *
- The offspring usually breaks away from the parent.
- Happens only in multicellular organisms.
- The offspring is genetically identical to the parent.
- Happens only in unicellular organisms.
- The offspring is not genetically identical to the parent.
- Happens in multicellular and unicellular organisms.
Answer:
1,3,4
Explanation:
They are all correct because of what they say
Which of the following structures provides support and movement ?
A. Heart and skin.
B. Nerves and brain
C. Lungs and spine.
D. Bones and muscles
A woman with a straight hairline has as child with a man who is heterozygous
and has a widow's peak.
What is the mother's genotype?
Answer:
aa
Explanation:
A widow's peak is the dominant genotype so one must not have that trait. If it was presented then the woman would have the genotype.
A widow's peak is dominant so the man would be either AA or Aa. Since it stated that his is heterozygous (Hetero meaning two different), his genotype would be Aa (again since a widow's peak is the dominant, it only needs one dominant genotype)
Which part of a plant is the least complex
Answer:
Cells are the least complex part of a plant :>
Explanation:
Two Drosophila with genotypes AABBCC and aabbcc are crossed to produce a heterozygous offspring, AaBbCc (the gene order is unknown). This AaBbCc Drosophila is crossed with an aabbcc Drosophila, resulting in the offspring below: Number: Phenotype: 600 ABC and abc 200 AbC and aBc 150 ABc and abC 50 Abc and aBC a. Which phenotype represents the double crossovers
Answer:
The double recombinant individuals are less frequent ---> Abc and aBC
Explanation:
We can know if genes are linked, by looking at the progeny distribution. In a tri-hybrid cross, If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, meaning that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.
We can recognize the parental gametes because their phenotypes are the most frequent in the descendants, while the double recombinants are the less frequent. Finally, the simple recombinant gametes are the ones with intermediate phenotypes frequencies.
In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.
We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,
ABC and abc 600while the double recombinants are less frequent.
Abc and aBC 50And simple recombinant gametes produced by the cross, which frequencies are intermediate.
AbC and aBc 200 ABc and abC 150a. Which phenotype represents the double crossovers
The double recombinants are less frequent ---> Abc and aBC
❗❗ HELPPPPPPPPP PLEASEEEEEE ❗❗
Cystic Fibrosis is a genetic disease of the lungs caused by a recessive allele. A man with Cystic Fibrosis marries a woman who does not have Cystic Fibrosis, but her father had the disease. What is the probability of the couple having a child that has Cystic Fibrosis?
Answer:
There is no chance of child with the disease
Explanation:
As cystic fibrosis is a recessive disease homogeneous condition is required in child to have the disease . Since the mother is not suffering from the disease & there is no history in her family so she does not have the gene for cystic fibrosis
Explanation:
thankyou
"The bird has brown spots on its wings" is an example of an inference,
True
False
what is a electrocardiograph technician
QUESTION 9
At which stage of mitosis do chromosomes line up at the equator (middle) of the cell?
anaphase
metaphase
telophase
prophase
Answer:
I think prophase. Correct me please.
Answer:
the correct answer be "Metaphase"
What forces are acting on a dropped book that falls to the ground?
A Gravity Only
B Gravity and Air Resistance
C Air Resistance only
D Friction only
HURRY PLS
Which of these elements is not likely to be found in an organic compound?
A. carbon
B. hydrogen
C. nitrogen
D. potassium
Answer:
D. potassium
Explanation:
Potassium is not found in an organic compound. Therefore, option D is correct.
What are organic compounds?Any of a vast group of chemical compounds known as organic compounds contain one or more carbon atoms that are covalently connected to atoms of other elements, most frequently hydrogen, oxygen, or nitrogen.
The building blocks of life's components, such as carbohydrates, fats (lipids), proteins, and nucleic acids, are examples of organic substances. Petroleum and natural gas, which make up the majority of fossil fuels, are also organic molecules.
High molecular weights and complicated structures are features of organic molecules. These are usually insoluble in water but soluble in organic solvents. Potassium is not found in an organic compound. Therefore, option D is correct.
Learn more about organic compounds, here:
https://brainly.com/question/5994723
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If you cross a white-eyed female (ww) to a red-eyed male (WY) Drosophila fly, you will see red-eyed females and white-eyed males in the F1 generation. If you cross an F1 red-eyed female to an F1 white-eyed male, what is the approximate percentage of total progeny in the F2 generation that are white-eyed males
Answer:
25%
Explanation:
ww gives white-eye female
WY gives red-eye male
ww x WY
F1: Ww wY Ww wY
Ww - red-eye female
wY - white-eye male
Crossing the two F1
Ww x wY
F2: Ww WY ww wY
Remember that white-eye male = wY
Percentage of wY = 1/4 or 25%
Hence, the percentage of progeny in the F2 generation that would be white-eye males = 1/4 or 25%
Removes water from waste and puts it back into the body; waste turns into solid here. *
Double stranded is a characteristic of
1. DNA
2. RNA
3. Both DNA and RNA
4. Neither
1) Which is the variation
stage and why?
How many codons are in the following mRNA sequence?
AUAUCUAGGCUU*
Answer:
4
Explanation:
Codons are usually in groups of 3. So AUA-UCU-AGG-CUU
Answer: 5
also try using the 6.6-6.7 bio flashcards on quizlet they might help
Identical twins, who have inherited a gene associated with obesity, are adopted by different families. One is growing up in a very health
conscious family, while the other is growing up in a family that eats a lot of fast food and never exercises. Which statement describes the
likely weights upon reaching adulthood (correct answer will get brainliest) please answer :(
Answer: it’s c mister
Explanation:
helpp please !!! thanks
Answer: it would be b!
Explanation:
which cells have cell walls
a) animals
b) animal and plants
c) neither
Answer:
Plant cells have cell wall as well as a cell membrane. Animal cells simply have a cell membrane and no cell wall.
The answer is c I'm pretty sure. Hope this helps!
the producers had 6,000 kcal of energy , how much would be passed to the primary consumer?
Answer:
600 kcal
Explanation:
In an ecosystem, energy is transferred from one organism in a trophic level to another organism in another trophic level. Organisms called PRODUCERS are capable of deriving energy from the sun. However, when fed upon by PRIMARY CONSUMERS, only about 10% of the energy is transferred to them because most of the energy (90%) is lost as heat.
Hence, in this case where the producers had 6,000 kcal of energy, 10% i.e. 10/100 of 6000 = 600 kcal of energy will be transferred to the primary consumers.
HELPPPPP
How many grams of LiCl are in 235.0 mL of 1.80 M lithium chloride solution?
1
Show Your Work
Answer:
Mass of LiCi = 17.9352 gm
Explanation:
Given:
Volume of LiCi = 235 ml
Molarity = 1.80 M
Find:
Mass of LiCi
Computation:
Atomic mass of LiCi = 6.9 + 365.5 = 42.4 gm
Mole(n) = Weight / Atomic mass
1.80 = [W / (42.4 x 235)]1000
Mass of LiCi = 17.9352 gm
What living things are important for the frog’s survival?
Can you pls list three?
Answer:
food, water, habitat
Explanation:
Answer:
Frogs need suitable land and freshwater habitats in order to survive. They also have highly permeable skin that can easily absorb bacteria, chemicals and other toxins.
Pls help me..........
Answer:i got u
Explanation:
Answer:
what in the world am I supposed to find
Please answer fast!
Answer:
C
Explanation:
Why are Mercury Seasons difficult to determine? Explain why.
Organic compounds are used as buildings?
Explanation:
your answer is true, organic compounds are used as buildings
PLEASE HELP!!!!!!!!!!
Answer:
More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.
Which label is missing from the diagram?
A. microscopic organisms
B. sharks
C. whales
D. decaying plants and animals