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What is A Characteristic -usually a homologous structure- shared by all organisms in a group?
A characteristic typically shared by all organisms in a group is known as a synapomorphy, which is a derived trait that reflects a common ancestry. These homologous structures can include specific anatomical features, genetic sequences, or developmental patterns that have evolved over time. For example, the presence of vertebrae in all vertebrates is a synapomorphic trait that unites this diverse group of animals. Such shared characteristics help scientists classify and understand evolutionary relationships among different organisms.
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A shared derived characteristic is usally a?
a characteristic---- usually a homologous structure----shared by all organisms in a group
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
What is the shape and structure of bacteria found in yogurt?
Bacteria found in yogurt are typically rod-shaped (bacilli) or spherical (cocci) in structure. They are usually unicellular and are classified as prokaryotic organisms, lacking distinct organelles and a nucleus.
Is a prokaryote single-celled?
Yes prokaryotes are single-celled because they are unicelular
What is shell made from?
Shells are usually composed of calcium carbonate formed by marine organisms like mollusks. The calcium carbonate is secreted by the organism and hardens over time to create the structure of the shell.
A shared derived characteristic is usally a?
a characteristic---- usually a homologous structure----shared by all organisms in a group
Birds and bees have wings are their wings homologous features or analogous features?
The wings of birds and bees are an example of analogous features, as they have evolved independently in each group and do not share a common ancestry that possessed wings. Homologous features are those that are inherited from a common ancestor and are usually more similar in structure.
Do homologous chromosomes have the same amount of genes?
Usually, however the sex chromosomes X and Y are homologous, but are very different in size (X is much smaller)
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
Which of the following do cladistic taxonomists not compare when hypothesizing evolutionary relationships among organisms?
Cladistic taxonomists do not usually compare similarities in overall resemblance or appearance when hypothesizing evolutionary relationships among organisms. Instead, they focus on shared derived characteristics, or synapomorphies, to determine evolutionary relationships.
What are three criteria used to determine whether something is homology or analogy?
Its in your txt book you dumb freshman
What is a cell that contains both sets of a Homologous chromosomes?
A cell containing both sets of homologous chromosomes is called a diploid. One is usually taken from the mother and one from the father.
What color is flagella?
Flagella can vary in color among different organisms, but they are commonly found in shades of white, gray, or translucent. Some organisms may have flagella that are colorless or transparent due to their composition and structure.
What stage in meiosis do homologous chromosomes come together?
During meiosis, the homologous chromosomes come together during prophase I. Pairs of homologous chromosomes align during a process called synapsis and form a tetrad (four sister chromatids, two from each pair of homologous chromosomes). During synapsis, crossing over may occur, during which homologous chromosomes exchange genetic material.
What is the shape and structure of bacteria found in yogurt?
Bacteria found in yogurt are typically rod-shaped (bacilli) or spherical (cocci) in structure. They are usually unicellular and are classified as prokaryotic organisms, lacking distinct organelles and a nucleus.
The three domains of organisms are based mainly on?
The three domains of organisms are based mainly on differences in cell structure, molecular makeup, and genetic makeup. These domains include Bacteria, Archaea, and Eukarya. Each domain represents a distinct lineage of life forms with unique characteristics.
What does a pair of homologous mean?
Those chromosomes having pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci are known to be homologous chromosomes. One homologous chromosome is inherited from the organism's mother; the other from the organism's father. They are usually not identical, but carry the same type of information.
