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Which of these might be used to determine common ancestry of two different species of plants?
Ernesto Castillo
fossil evidence :)
Paige Gardner
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Is there a difference between the expressions different than different from and different to?
The main difference between different than, different from and different to are the countries of origin and where it is used. Different than is common in American English, different to is more common in British English. The term different from is common in both American and British English.
Why do you need the common prime factors when finding the greatest common factor?
You do not necessarily need the common prime factors when finding the greatest common factor, but with large numbers or numbers for which you cannot easily determine all the factors, using prime factorization to determine the greatest common factor is the easiest method. The greatest common factor can then be determined by multiplying the common prime factors together. For example, when trying to find the greatest common factor of 2144 and 5672, finding all their possible factors to compare could be difficult. So, it is easier to find their prime factors, determine the prime factors they have in common, and then multiply the common prime factors to get the greatest common factor. For descriptions and examples of finding the greatest common factor, see the "Related Questions" links below.
What is the least common multiple of 14 and 42?
The LCM of 14 and 42 is 42. The simplest method to determine the least common multiple in this case is to notice that 42 is a multiple of 14. Since 42 is a multiple of 14, the least common multiple is 42. To determine the least common multiple of two numbers, you can also determine the prime factors of both numbers. Then, determine the prime factors they have in common. Multiply all their prime factors together (in other words, multiply both numbers together) and divide by the prime factors they have in common (in other words, their greatest common factor). The prime factors of 14 are 2 and 7. The prime factors of 42 are 2, 3, and 7. The greatest common factor of 14 and 42 is 14. So, the least common multiple of 14 and 42 is (2x7) x (2x3x7) ÷ 14 = 42.
How are a common denominator and a common multiple different?
They are essentially the same. A common denominator is the common multiple of a set of denominators of a set of fractions.
What is the least common multiple of 9 and 12?
The LCM of 9 and 12 is: 36To determine the least common multiple of two numbers, determine the prime factors of both numbers. Then, determine the prime factors they have in common. Multiply all their prime factors together (in other words, multiply both numbers together) and divide by the prime factors they have in common (in other words, their greatest common factor).The prime factors of 9 are 3 and 3.The prime factors of 12 are 2, 2, and 3.The prime factors in common are a single 3, the greatest common factor is 3.36: 4 x 9, 3 x 12.The least common multiple of 12 , 9 = 36.3636
Which of these might be used to determine common ancestry of two different species of animals?
Fossil evidence
Is it true that the degree of dissimilarity in DNA sequences is an indication of how long ago two species shared a common ancestor?
There is a direct proportional relationship between common ancestry and degree of DNA similarities. The common ancestry will determine the degree of the similarities in the DNA.
How does cladistic analysis determine the order in which a set of related species evolved?
Cladistics is a method of classifying organisms by common ancestry, based on the branching of the evolutionary family tree etc
Does cladistic analysis determine the order in which a set of related species evolved?
Cladistics is a method of classifying organisms by common ancestry, based on the branching of the evolutionary family tree etc
What is phylogenetic relatedness?
Recency of common ancestry. Species A is more closely related to species B than to species C if (and only if) the last common ancestor of A and B lived more recently than the last common ancestor of A and C. The concept can be applied not just to species but also to organism, populations, or genes.
What was the major proposal in Charles Darwin's On the Origin of the Species?
that all organisms are linked by common ancestry
What is notion of homology?
Homology is a concept in biology that refers to similarities between different species due to shared ancestry. In genetics, homology refers to similar DNA sequences found in different species that are inherited from a common ancestor. Homologous structures in anatomy are organs or body parts that have a similar underlying structure but may have different functions in different species.
Which biologist first proposed that all organisms share a common ancestry?
Charles Darwin, "Origin of the Species"
What are Structures in different organisms that share a common ancestry?
Homologous structure
What were two observations Charles Darwin thought about nature?
1. That all species shared a common ancestry. 2. These species did not survive by chance, but by natural selection.
What do different species share besides common anatomy?
what do different species share besides common anatomies
Analogous structures are evidence of?
That different organisms are able to adapt to the same environment.
