Admin Table of Contents
- 1 What two ways can we tell that organisms are related?
- 2 What are two ways that scientists measure similarities between organisms?
- 3 Which two animals are most closely related how do you know?
- 4 What is the same among all organisms?
- 5 How do scientists classify organisms based on their physical appearance?
- 6 Can two organisms from the same genus produce different types of offspring?
Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms.
What are two ways that scientists measure similarities between organisms?
Similarities between organisms can stem either from shared evolutionary history (homologies) or from separate evolutionary paths (analogies). After homologous information is identified, scientists use cladistics to organize these events as a means to determine an evolutionary timeline.
What are the ways in which organisms differ from one another?
variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
What are two ways that organisms can be compared to provide evidence of evolution from a common ancestor?
Comparison of genetic material, homologous structures, and fossil records can be used to support common ancestry amongst organisms. DNA and amino acid sequences can be used support the claim that two organisms share a common ancestor.
Answer: Humans, chimpanzees, gorillas, orangutans and their extinct ancestors form a family of organisms known as the Hominidae. Researchers generally agree that among the living animals in this group, humans are most closely related to chimpanzees, judging from comparisons of anatomy and genetics.
What is the same among all organisms?
All living organisms store genetic information using the same molecules — DNA and RNA. Written in the genetic code of these molecules is compelling evidence of the shared ancestry of all living things. Some mammalian genes have also been adopted by viruses and later passed onto other mammalian hosts.
Why are organisms different?
The world has many different environments, and distinct environments support the life of different types of organisms. Each plant or animal has different structures that serve different functions in growth, survival, and reproduction.
How do scientists determine how closely related organisms are to one another?
Scientists use concrete evidence to show how closely related various organisms are to one another. This evidence includes quantitative data such as gene mapping, mitochondrial DNA and ribosomal RNA. In this manner, scientists can say that one species is 77% related to another species based on their DNA.
How do scientists classify organisms based on their physical appearance?
As centuries went by, scientists began grouping organisms into categories based on their physiological appearance. This means that scientists observe the anatomical structures and the how the organisms use these structures in nature.
Can two organisms from the same genus produce different types of offspring?
Two organisms from the same genus may produce fertile offsprings. But two organisms from two different genera cannot produce offsprings that are capable of reproduction. When writing the scientific names of organisms it begins with the Genus name, with the first letter of the Genus name capitalized followed by a period.
What is the difference between a genus and a species?
Genus belongs to a ranking lower than family and above species, whereas species are organisms with similar characteristics that come below the Genus classification ranking.