The early ancestors of horses showed the presence of digits on their limbs, while modern horses have hooves. What are likely possible reasons for this change?
Answer:
Natural Selection & Fitness
Explanation:
Horses have evolved to run as fast as possible because they are prey animals.
The hooves give advantages to the predecessors to the modern horse rather than the foot-bearing horses.
Thus when somebody inevitably becomes a snack, the hoof bearing horses lived longer. (Natural selection)
Because they've lived longer, they've had more babies. (Fitness)
Their babies are more likely to pass on the genes they've inherited from their successful parents, and the population of hooved-horses begins to exceed the population of footed-horses.
In this circumstance, all the footed-horses are gone. The population has evolved.
Hope this helps <3
PS: here's a source! https://www.amnh.org/exhibitions/horse/the-evolution-of-horses/on-your-toes#:~:text=Hooves%20and%20long%20legs%20help,many%20horses%20retained%20three%20toes.
The process of converting the "language" of mRNA into the "language" of proteins is called *
A - translation
B - transcription
C - mutation
D - active transport
Select the correct answer.
Which of these is an example of selective breeding?
A.
A scientist places bacteria in a Petri dish treated with antibiotics and observes what happens to the population over time.
B.
A farmer plants tomato seeds that have been genetically modified to be pest resistant in his garden.
C.
A farmer only allows trees that produce tart apples to reproduce until he has a population that only produces tart apples.
D.
A scientist uses the genetic material from a unicellular organism to create an exact copy of that organism.
Answer:
the answer is C
Explanation:
Seletive breeding means only nuture one specific kind of species. In answer C, the farmer only allows trees produce tart apples to reproduce, so the answer is C.
Hope this will help❤️
what is the ozone layer
The layer of the Earth below the crust
The layer of the atmosphere that we breathe
A portion of the Earth's atmosphere that protects the Earth from radiation
All of the above
ILL GIVE BRAINLIEST
Answer:
A portion of the Earth's atmosphere that protects the Earth from radiation
Which of these organisms provides evidence that mitosis is used for reproduction in some species
A.amoeba
B.ant
C.bluebird
D.jellyfish
An organism that provides evidence that mitosis is used for reproduction in some species is known as Amoeba. Thus, the correct option for this question is A.
What is Mitosis?Mitosis may be defined as a type of cell division through which a parental cell is successfully divided into two daughter cells. These daughter cells are genetically identical to the parental cell and are diploid in nature. Somatic cells of the body generally divided this process.
Amoebas are single-celled organisms that reproduce asexually through binary fission. Reproduction occurs when an amoeba doubles its genetic material and creates two nuclei. In this process of reproduction, an individual divides itself into two daughter cells similar to mitosis.
Therefore, an organism that provides evidence that mitosis is used for reproduction in some species is known as Amoeba. Thus, the correct option for this question is A.
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PLEASE EXPLAIN IT'S FOR A QUIZ TOMORROW!!!!!!!!!!!
Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw into each tube, and the bromthymol blue turned yellow. An aquatic green plant was placed into each tube, and the tubes were corked. One tube was placed in the dark, and one was placed in direct sunlight. The yellow solution in the tube in sunlight turned blue, while the one in the dark remained yellow. Which statement best explains why the solution in the tube placed in sunlight returned to a blue color?A. Oxygen was produced by photosynthesis.
B. Carbon dioxide was removed by photosynthesis.
C. Carbon dioxide was produced by respiration.
D. Oxygen was removed by respiration.
Answer:
c. is the correct answer
Explanation:
brainliest please?
I hope this helps you with your question.
Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?
a. Karyotype
b. Family history
c. Genetic survey
d. Punnett square
Answer:
a. Karyotype
Explanation:
Karyotypes describe the chromosome count of an organism, so all the chromosomes would be in front of you, and it'd be easy to tell if there are 2 or 3 chromosome 21.
Choose ALL options that refer to the proteins that work together to make a muscle contract. A) fascicle B)actin C)mysoin D)fiber
brainlest and 100 points
Answer:
The troponins involved in muscular contraction are actually a complex of three proteins known as troponin I, troponin C, and troponin T (Figure 2.125). They associate with each other and with tropomyosin on actin filaments to help regulate the process of muscular contraction.MExplanation:
Answer:
mysoin and actin
Explanation:
muscle contractions results from the reaction of myotin and acting.
help I do not understand :/
12. The more genetic variation a population has, the
more likely it is that some individuals will?
a) evolve.
b) migrate.
c) survive.
d) mutate.
Answer:
b migrate
Explanation:
sorry if im wrong
The more genetic variation a population has, the more likely it is that some individuals will migrate.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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Describe how a plant takes in carbon dioxide from the air and mineral ions from the soil.
Answer:
plant takes carbon dioxide in the atmosphere with the help of leave and take mineral ions from soil with the help of roots
What is a model system? Please give an example.
Which animals typically have a reproductive group and a nonreproductive group within their social structure?
bees
lions
moose
zebras
Answer:
Bees
Explanation:
In the beehive there are bees like worker and drone bees that do not reproduce. Their job is to make honey and repair the hive.
Answer:
it's A
Explanation:
Groundwater is taken up through a tree's roots so the tree can grow. Which sequence correctly
shows how the water the plant is using will cycle though the water cycle and become groundwater
again?
respiration → condensation → precipitation → groundwater
condensation precipitation groundwater → transpiration
transpiration → condensation → precipitation → groundwater
condensation → precipitation → groundwater → respiration
Answer:
condensation, precipitation, groundwater → transpiration
Explanation:
I hope it will help you
culture of honey bees is called ……………….
a)pisciculture b)apiculture c)sericulture d)none
B. Apiculture
Explanation:
I know this because I learned it in class before
In Respiration, to where is the energy from sugar molecules transferred?
Explanation:
During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Answer:
its transferred to ATP
Explanation:
during respiration glucose and oxygen is converted into carbon dioxide and water, so the energy is transferrred to ATP
A freckled man marries a woman without freckles. They have four children, two with freckles, and two without freckles. What are the genotypes of all these people?
Answer:
The genotype of the father: Ff
The genotype of the mother: ff
The genotype of the two children without freckles: ff
The genotype of the two children with freckles: Ff
Explanation:
Freckles (F) are is dominant trait, so one dominant allele in the genotype of an individual will cause he/she to have freckles. Since the father has freckles, but only two of his children has freckles; that means that he has a heterozygous genotype. In the Punnett Square, the offsprings' genotypes are shown, as well as the parents'.
A freckled man marries a woman without freckles, and they have four children, two with freckles and two without, so the genotype of the parents are Ff, ff and the children with freckles are Ff, while the freckleless are ff types.
What is the significance of the freckle trait?There are both dominant and recessive traits that determine the person's quality, such as freckles, which are dominant over being freckleless. When the parents with freckles cross with the parents without freckles, they will produce half the freckles and half the freckleless. The parent with a freckle is heterozygous (Ff), so two types of gametes will be produced, such as F and f, and will form Ff and ff offspring when crossed with the freckleless parent (ff).
Hence, a freckled man marries a woman without freckles, and they have four children, two with freckles and two without, so the genotype of the parents are Ff, ff and the children with freckles are Ff, while the freckleless are ff types.
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all the different organisms interacting in a pond make up..?
Answer:
Population
hope this helps
have a good day :)
Explanation:
The human population
doubles every 36 years. If people currently use
25 percent of Earth's primary production, in
what year might humans use 100 percent?
According to Newton's Second Law of Motion, a bigger axe would have _______ force than a smaller axe if they were going the same rate.
1. more
2. less
Answer:
1. more force than a smaller
2 characteristics of earth's crust??
Answer:
The earths crust is composed by a variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The crust occupies less than 1 percent of the earths volume.
A student conducted an experiment to test the strength differences between an orb spider's web and a black widow spider's web. The student calculated the strength of the wob by using the number of seconds each web held a 4 gram weight What type of results did the student calculate in this experiment?
A) Qualitative results
B) Problem-solving results
C) Hypothetical results
D)Quantitative results
Answer: D
Explanation:
Quantitative type of result the student calculate in this experiment.
What is Quantitative type of results?Quantitative research is based on the collection and interpretation of numeric data. It focuses on measuring (using inferential statistics) and generalizing results.
The student have no hypothetical formula to calculate the actual strength of the web of both spider, so he always use to get quantitative type of result in his results.Hence option D is correct.
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An axon releases dipamine outside of the cell by
Answer:
Having elecrical impulses travel down the axon to the terminal.
Explanation:
10)
What was a positive effect of the green revolution?
A)
High yields of grains
B)
Profit for small farms
o
Excess use of fertilizer
D)
Excess use of pesticides
You go on an expedition into the Amazon Rainforest to look for new species before they are destroyed by logging. You find one organism you have never seen before. You run a few tests to determine what kind of organism it is. You determine that it is multicellular and that it first digests, then absorbs nutrients from the environment around it. What classification fits it best?
A. Plantae
B. Animalia
C. Fungi
D. Protista
Multicellular is a cellular classification where the organism is made of more than one cell. The multicellular organism that absorbs nutrients best fits in the kingdom of Fungi. Thus, option C is correct.
What is Kingdom Fungi?
Fungi is one of the five kingdoms that are characterized by eukaryotic organisms with multicellular structures. They contain microorganisms that are heterotrophs and cannot make their own food. They absorb the nutrients from decaying organic materials.
The fungal mycelia and filaments called hyphae allow fungi like mushrooms and molds to absorb nutrients and minerals from the surrounding. They digest the nutrients with the help of enzymes.
Therefore, option C. the Fungi first digest then absorb nutrients from the environment.
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Habitat destruction causes issues for many different species because it gives them a smaller area to move around to look for food, shelter, or other resources. Which of the
following would be a possible solution to this problem?
A. Connecting the forests together to allow animals to move between the forests
B. Killing all of the animals
C. Constructing a large wall around the city so the animals and humans are separated
D. Moving all of the animals to one forest away from cities
Answer:
A
Explanation:
Cause the only way to let them be free is for them to connect to the forests. (please don't kill me if I'm wrong-)
Which statement is not true about chicken-pox?
Answer:
where is your statements
cell is discovered by whom
Answer:
Explanation:
Cell is discovered by Robert Hooke.
Answer:
The cell is initially discovered by Robert Hooked in 1665
ten effects of unsuitable work place environment to human health
Which of the following is true about genes?
A.
In humans, genes are passed to an offspring from two parents.
B.
The genes of a particular organism can never change throughout its lifetime.
C.
Genes are made up of smaller molecules known as chromosomes.
D.
Genes are responsible for all the traits of an organism.
Answer:
i think its A
Explanation: