Why do researchers use rRNA and investigations of relationships between taxa that diverged hundreds of millions of years ago?
Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago? rRNA mutates rapidly. rRNA is traditionally the nucleic acid chosen for recent comparisons. DNA coding for rRNA changes relatively slowly.
What is the process where new genes evolve from duplicates of old ones?
Gene duplication occurs when errors in the DNA-replication process produce multiple instances of a gene. Over generations, the versions accrue mutations and diverge, so that they eventually encode different molecules, each with their own function.
Which of the following taxonomic categories contains all the others listed here see Concept 26.1 page?
Order, being the highest category among the given categories,i.e., family genus, species and order, includes all the other taxonomic categories.
Which of the following categories contains all the others listed here?
Class contains all the others listed here.
What process actually increases the number of genes in an organism’s genome see Concept 26.4 page?
What process actually increases the number of genes in an organism’s genome? Mutations that lead to duplications actually increase the number of genes in a genome.
Which of the following would be the most useful in creating a phylogenetic tree of a taxon?
Order, being the highest category among the given categories,i.e., family genus, species and order, includes all the other taxonomic categories.
Which of the following taxonomic categories contain all the others listed here?
Morphological data from fossil
What is it called when a gene is duplicated?
Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic material is generated during molecular evolution. It can be defined as any duplication of a region of DNA that contains a gene.
How does gene duplication create new genes?
This can occur in several different contexts. During a disease process, extra copies of the gene can contribute to a cancer. Genes can also duplicate through evolution, where one copy can continue the original function and the other copy of the gene produces a new function.
How do duplicate genes relate to evolution?
Gene and genome duplications provide a source of genetic material for mutation, drift, and selection to act upon, making new evolutionary opportunities possible. As a result, many have argued that genome duplication is a dominant factor in the evolution of complexity and diversity.
What is it called when genes are changed?
Mutations are abnormal changes in the DNA of a gene. The building blocks of DNA are called bases. The sequence of the bases determines the gene and its function. Mutations involve changes in the arrangement of the bases that make up a gene.
What is the function of fimbriae see Concept 27.1 page?
Class contains all the others listed here.
Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago See Concept 26.4 page?
What is the function of fimbriae? They are used to attach the cell to its substrate or to other prokaryotes.
In which vertebrate lineage has the studied gene evolved most rapidly?
Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago? rRNA mutates rapidly. rRNA is traditionally the nucleic acid chosen for recent comparisons. DNA coding for rRNA changes relatively slowly.
Which of the following categories contains all of the others?
Order, being the highest category among the given categories,i.e., family genus, species and order, includes all the other taxonomic categories.
Which of the following taxonomic categories contains all the others listed her?
Class contains all the others listed here.
Which level of taxonomy encompasses all of the others?
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Which of the following is a category order family genus all of these?
The correct answer is Kingdom – phylum – class – order – family – genus – species.
Why might the number of genes in the genome underestimate the number of different proteins that an organism makes?
What is the function of fimbriae? They are used to attach the cell to its substrate or to other prokaryotes.
Which of the following would be useful in creating a phylogenetic tree of a taxon?
(a) Morphological data from fossil and living species would be most useful in creating a phylogenetic tree of a taxon. When creating a phylogenetic tree of a taxon, it will be necessary to determine which species are the most similar to each other to decide where each species diverged in an evolutionary timeline.
Which method is best for phylogenetic tree?
INTRODUCTIONThree methods–maximum parsimony, distance, and maximum likelihood–are generally used to find the evolutionary tree or trees that best account for the observed variation in a group of sequences. Each of these methods uses a different type of analysis.
What is used to make a phylogenetic tree?
Any DNA, RNA, or protein sequence can be used to generate a phylogenetic tree. But DNA sequences are most commonly used in generating trees today.
What kind of traits are the most useful when constructing phylogenetic trees?
A phylogenetic tree is constructed based on the patterns of ancestral and derived traits. The various branches are based on having or not having a particular trait or group of traits. (Derived traits are most useful!) Derived traits are evidence of a shared evolutionary heritage.
Which taxonomic category includes all the others?
Order, being the highest category among the given categories, i.e., family, genus, species and order, includes all the other taxonomic categories.
What are the 7 taxonomic categories in order?
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
