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Organisms sharing a common ancestor are of common descent. The LUA , the last universal ancestor, lived 3.9 billion years ago.
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When an experiment sHow is that two variable are closely related the experiment shows?
coorelation
Scientists know that organisms that are more closely related will have DNA sequences more similar to each other than organisms that are distantly related Which two organisms below would most likely h?
dog and wolf
What does it mean for species to have an evolutionary relationship?
If two organisms share an evolutionary relationship, that means that they have a common ancestor on the evolutionary tree. The more recently the shared common ancestor lived, the more closely related the two present organisms are, evolutionarily.
What are the advantages and disadvantages of outbreeding?
Advantages: Outbreeding often produces offspring of superior quality because it increases homozygosity (the occurrence of two alleles for the same trait at corresponding positions on homologous chromosomes), thereby sharply reducing the risk of deleterious recessive genes being expressed. Crossbreeding is the most common form of outbreeding.
What cell organelles are most closely associated with energy changes in a plant?
the chloroplast and the mitochondria are the organnels closely related to energy production in plants
What are the two kinds of reproductive isolation mechanisms that biologists divide?
Temporal isolation-species mating at different times of the year.Behavioral isolation-mating behaviors in two groups of isolated populations change, thus making individuals from the two groups not attracted to each other.Pollinator isolation-some closely related plant species have flowers that attract different pollinators, preventing the two species from inbreeding.Mechanical isolation-when reproductive organs in closely related species change drastically, making it impossible for one species to mate with another.Gametic isolation-when incompatibilities between the sperm and eggs of closely related species keep them from fusing.Hybrid inviability or sterility-when the egg gets fertilized, the resulting offspring may not live (inviable) or it is sterile.
Can different kinds of bears mate?
no because all bears are almost the same except if there different color Some can. For example, there are known cases of polar/brown bear hybrids. These two are closely related species.
What two senses are closely related?
The senses of taste and smell are closely related.
What is used to tell if two organisms are related?
Same genus or closely related species.
Is a polar bear a Kodiak bear?
No, but the two are closely related.
Which two organisms in the chart are closely related?
Family and kingdom
Is the Saluki dog breed closely related to the Silken Windhound?
No, they're two separate sighthound breeds.
What role does molecular evidence play in determining how closely two species are related two each other?
the role in which molecular evidence play in determining how closely two species are related to each other is through the cladogram
Which two organism in the chart are most closely related?
Family and kingdom
When an experiment shows that two variable are closely related the experiment?
correlation
When two animals that are closely related have an offspring it is referred to as .?
Inbreeding!
Which two organisms on the phylogenetic tree are most closely related?
Clasifiaction
