20 million years ago two species share a common ancestor, if the molecules found in these two species differ by a total of eight mutations.
Neutral mutations play an major role in the phenomenon of evolution because they generally take place at a consistent rate over time.
Every time when a genome is passed from one generation to another , a small error is responsible for changing the base sequences. So the mutation rate in the genome copy is calculated by both the rate of error per copy and the number of copies made per unit time. Both of these factors may be impacted by species biology.
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. How did Mendel study heredity?
Answer:
Explanation:
By experimenting with pea plant breeding, Mendel developed three principles of inheritance that described the transmission of genetic traits, before anyone knew genes existed. Mendel's insight greatly expanded the understanding of genetic inheritance, and led to the development of new experimental methods.
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Which model—conservative, semiconservative, or dispersive—is the model we now know is correct?
Answer: Semi-Conservative
Explanation:
The strands separate as seen in the figure and are used to create new strands.
Molecular basis of non infectious diseases
Answer:
NCDs share four major risk factors: tobacco use, physical inactivity, the harmful use of alcohol and unhealthy diets.
Explanation:
describe how genes are related to the structure and function of proteins
Explanation:
Most genes contain the information needed to make functional molecules called proteins. (A few genes produce regulatory molecules that help the cell assemble proteins)
Answer:
Proteins are composed of long chains of amino acids organized into a specific order. Genes provide the instructions for making the amino acid chains that are then assembled into proteins.
is this molecule...
a. fatty acid
b. straight chain sugar
c. nitrogenous base
Answer: a. Fatty Acid
Explanation:
A fatty acid is a carboxylic acid with a long side chain of hydrocarbons. Most fatty acids contain an even number of carbon atoms in the hydrocarbon chain and follow the general molecular formula of CH3(CH2)xCOOH where x is the number of carbon atoms in the hydrocarbon chain.
Describe two similarities in the structure of the organic molecules shown.
1 . They all contain carbon. Most of them are flammable.
2 . They are all soluble in non-polar solvents. They are mostly, are covalently bonded molecules.
Amino acids and nucleic acids are two examples of biomolecules found inside cells. C, H, O, as well as N make up amino acids and nucleic acids alike.
The basic building elements of the body, amino acid residues, are strung together to form peptides, which are then joined together by acids linked by peptide bonds proteins. The fundamental distinction is that peptides are composed of shorter molecules called amino acids versus proteins.
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what is name of the new island off iceland that has begun succesion since 1963?
Answer: Surtsey
Explanation:
Surtsey is a new island formed by volcanic eruptions in 1963-67.
Define the word scavenger.
Explanation:
1. an animal that feeds on carrion, dead plant material, or refuse.
2. a person who searches for and collects discarded items.
The largest carbon reservoir on Earth is coal.
True
False
Answer:
True this is the answer bro
Cystic fibrosis is caused by
a mutation in the affected
individual's DNA.
What type of mutation
causes cystic fibrosis?
A. the addition of several different
codons
B. the loss of one base
C. the loss of a whole amino acid (3
base pairs) this
D. the CAG codon repeating at least 40
times
Cystic fibrosis is caused by a mutation in the affected individual's DNA therefore the type of mutation which causes cystic fibrosis is the loss of a whole amino acid (3 base pairs) and is denoted as option C.
What is Mutation?This is referred to as the change in the DNA sequence of an organism and it often occurs when there is an errors in DNA replication during cell division.
Cystic fibrosis is caused by the loss of a whole amino acid (3 base pairs) from the cystic fibrosis transmembrane conductance regulator gene which was why it was chosen as the correct choice.
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You probably know that you need to breathe oxygen to survive. But how does your body use that oxygen? That oxygen helps your body to release _____ energy that is stored in _____ and other carbon based molecules. The energy is _____ to produce _____. This process of using _____ to produce _____ by breaking down _____ molecules is called _____.
That oxygen helps your body to release chemical energy that is stored in sugars and other carbon based molecules. The energy is released to produce ATP. This process of using oxygen to produce ATP by breaking down carbon-based molecules molecules is called cellular respiration.
What is cellular respiration?In Science, cellular respiration can be defined as a series of metabolic chemical reactions that typically occur in both prokaryotic and eukaryotic cells within living organisms, in order to produce energy in the form of adenosine triphosphate (ATP).
Generally speaking, the first step of cellular respiration is a biological and chemical process that is referred to as glycolysis.
In conclusion, we can reasonably infer and logically deduce that all living organisms such as humans, animals, eukaryotes, etc., breathe in oxygen and exhale carbon dioxide in order to survive, which occurs through a process that is referred to as cellular respiration.
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A Haiku about the sea floor spreading
A Haiku about the sea floor spreading is given below:
The Seafloor Spreading
Spreading with dirt and plastics
Leaving sea life dying
What is Haiku?Haiku is a seventeen-syllable Japanese poetry with three lines of five, seven, and five syllables that generally evoke pictures of the natural world.
These are the rules for creating haiku:
There are a total of 17 syllables.Haiku is only three lines long.The first line of a Haiku typically contains 5 syllables, the second line has 7 syllables, and the third line has 5 syllables.Avoid titles and rhyme (both of which are almost never used in haiku), as well as metaphor, simile, and most other rhetorical elements (they are often too abstract or detour around the directness exhibited in most good haiku).
Haikus are historically derived from the Japanese Hokku. Hokkus are group poetry that adhere to the 5/7/5 formula. They are intended to comment on the writers' season or surroundings and to generate some form of contrasting visual split by a kireji or "cutting word."
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PLEASE HURRY WILL MARK BRAINIEST ⚠️⚠️
This diagram shows a plant cell. Which structure is found in a plant cell but is absent in an
animal cell?
A- 3
B- 1
C- 2
D- 4