Answer:
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
Explanation:
please give me brainlist and follow
Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?
A.
DNA
B.
iron
C.
ATP
D.
oxygen
Answer:
B
Explanation:
The substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil - A. DNA
DNAis the genetic material that is found in every living organism that provides genetic information.
It also provides evidence of evolution.DNA sequences vary from species to species, but there are many overlapsThe ongoing branching of the sequencing produces multiple lines of descent.It can be inferred by comparing the DNA sequences of different organisms to check or find the evolutionary relationships of the organism that formed the fossilThus, The substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil - A. DNA
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ILL GIVE BRAINLIEST (RIGHT ANSWER ONLY)
Students in Ms. King's science class are researching the history of the cell theory and will write a blog to show what they have learned. Which of the following is the best choice for the introductory sentence?
A. A scientific theory, like cell theory, does not change.
B. A hypothesis, such as one about cells, usually becomes a theory.
C. Scientific theories, like those written about cells, are not as important as scientific laws.
D. Scientific theories, such as cell theory, are based on well-supported observations of nature.
Answer:
b just go with your gut 54
which two atoms form an ionic bond
A. two sodium atoms
B. sodium and bromine
C. fluorine and chlorine
D. two oxygen atoms
Answer:
GO learn dont cheat and the answer is B.
Explanation:
What is Chargoffs Rule?
A T and C G = ________ %
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 protein stoichiometry ratio of purine and pyrimidine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine
Which of the following is least likely to increase the rate of evolution?
Answer:
Explanation:
there are no options?
Answer:
?
Explanation:
wer the
Where is the energy of the
roller coaster cart entirely
potential?
A. When it moves up the hill at location A
B. When it stops for a brief moment at
location B
C. When it is traveling down the hill at
location C
Answer:
B. When it stops for a brief moment at location B
Adenine with Thymine and Cytosine with Guanine are known as the nitrogen ____ in DNA.
Answer: Nitrogen bases
Explanation: because of the base pair rules
Analyze the Punnett square below and determine the the genotypic ratio. Axial flowers are dominant
Answer:
first answer choice
Explanation:
there's 1 AA, 2 Aa's, and 1 aa. the genotype is the combination of those letters, and the phenotype is what they would look like.
What happens to a species when it becomes extinct? A. A few members adapt to a new environment. B. Most members move to a new environment. C. All members evolve into a new species. D. No members live to reproduce.
Answer:
D. is your answer
Answer:
no members live to reproduce
Explanation:
trust me im right
compared to gases liquids are not easily compressed because particles of liquids do what?
Answer:
LiquidsEdit
Because the particles can move, liquids don't have a definite shape, and they can flow. Because the particles are still packed close together, liquids can't easily be compressed and keep the same volume.
Explanation:
Answer:
particle of liquid exert pressure because they have low intermolecular space than compared to gas
10. Three observers made the diagrams above to show what they think the Moon looks like when it is
seen from above (top view), In these diagrams, the sunlight is coming from the left, as shown by the
arrows. Which diagram is accurate and why?
Answer:
B
Explanation:
Which of the following would most likely represent the types of individuals found in one of the species resulting from shape becoming a prezygotic isolating mechanism in the initial population represented in Figure 1?
Answer:
A
Explanation:
The correct answer choice is not B,C, or D so it should be A
Future generations will have the same frequencies of the A and a alleles as generation 2. Individuals with the aa genotype could be produced.
helppp can I have a specific answer pleasee
Answer:
the longer it takes to orbit the sun I hope it helps
write short note on adaptations
Answer:
Adaptation is the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment.” Living things are adapted to the habitat they live in. This is because they have special features that help them to survive.
Explanation:
how might changes in abiotic factors in an area lead to speciation
Answer:
they can involve biotic interactions like competition, predation, and disease, or abiotic factors like severe weather, flooding, drought, and fire. Most species appear to be limited in at least part of their geographic range by abiotic factors, such as temperature, moisture availability, and soil nutrients.
Explanation:
Exponential growth happens when a population grows at a decreasing rate.
O True
O False
Answer:
false
Explanation:
exponential growth happens when the population increases
PLEASE HELP.
i only have until 3:30
ok so, The question is:
how does building a road, affect Logging companies? please make a SHORT answer not a LONG one
Answer:
Explanation:
building a road, affect Logging companies because the consequences of building the road are that it will provide loggers access to highly-valued trees, provide a more accessible trade route for merchants and farmers, affect the wildlife and water quality in the area, and possibly cause indigenous populations to relocate.
Answer:
Building a road effect logging companies by cutting down other trees in order to make a clear spot for the road
Explanation:
Climate changes and loss of biodiversity in Yellow Stone National Park are the
result of *
Ecological Footprint
Global Warming
Carrying Capacity
Ozone Layer
♀️ please help this is confusing
it really is i dont even know how to do multiplication 4x4=79
it Due today please help
Answer:
1. Denitrification
Explanation:
Denitrification is the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere.
Denitrification turns Nitrate to N2 gas
Explanation:
Stem cells are -
cells that can only be found in embryos
cells that never go through division
undifferentiated cells with no specific job
cells that grow uncontrollably
Answer:
The correct answer is A or 1 or the first answer choice
Answer:
undifferentiated cells with no specific job
Explanation:
they can develop to many different cells in the body
??? help ??? please anyone
Answer:
B
Explanation:
the Sting of bees contains which acid
Answer:
Formic acid
Explanation:
It is a type of acid which causes the sting. The sting can be neutralised by applying a base.
Answer:
HistamineExplanation:
It makes up 0.9% of venom, and causes itching and pain at the sites of the Sting.help meeeeeeeeeeeeeeeeee
Answer:
C.
Explanation:
A is mental well-being.
B is social well-being.
C is physical well-being.
D is medical well-being.
Answer:
C. getting regular exercise
Explanation:
Getting regular exercises is a part of physical well being as it makes us fit and healthy.
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
they asked for 20 characters so I’m trying here
Answer:
a meteor I hope it awnserd your question
Which of the following is needed for photosynthesis to occur?
A.
Radiant energy from the Sun, which transforms into chemical energy
B.
Minerals in the soil, which transform into chemical energy
C.
Oxygen in the air, which transforms into electrical energy
D.
Sugar in the plant, which transforms into light energy
Answer:
A. Radiant energy from the sun, which transforms into chemical energy
8. A student looks at the dihybrid cross shown above and comes to the
conclusion that it is not possible for a tall pea plant with purple flowers to
be produced in this cross. Is the student correct?
Answer:
Can you upload a picture of the dihybrid cross or even just say the genotypes of the parents?
Explanation:
Sorry for using the answer feature, i couldn't comment for some reason.
Gymnosperm ovules are fertilized twice, called double fertilization.
Group of answer choices
True
False
Answer:
false
Explanation:
Question 21
4
Which nucleotide is only present in RNA?
Cytosine
Thymine
Uracil
Adenine
Answer:
The answer is Uracil
Explanation:
Uracil is the only nucleotide present in RNA. remember this RNA is ACGU and DNA is ACGT. See the difference?
Besides plants, list 2 other organisms that carry out photosynthesis.
HELP PLEASE!!!!
Answer:
Photosynthesis is carried out by algae, cyanobacteria, and even some animals.