Answer:
Potassium Feldspar
Explanation:
Got the answer after a lot of research.
Assuming this is a blank free fill question, a whole prehistoric insect could be found trapped in amber.
Answer:
b. Often the initial stage in the evolution of a complex character was an adaptation to some unrelated selection pressure.
d. Phylogenetic analysis using cladistics can help reveal the sequence leading to the evolution of a complex character.
Explanation:
The evolutionary developmental program of complex characters can be analyzed by examining synapomorphies, i.e., by examining shared, derived characters common between an ancestor of a given taxonomic group and its descendants. Synapomorphies are able to create evidence for historical relationships between closely related organisms. Moreover, cladistics is a method used to categorize species/taxa into groups called 'clades' based on arranging organisms with similar traits, which can provide useful information on the evolutionary history of complex traits in different species/taxa. In phylogenetics, the analysis of complex characters involves two different stages: 1-character analysis and 2-cladistic analysis. Homology refers to structures that look similar because they were inherited from a common ancestor (i.e., they have a common origin); whereas characters are considered as parts of transformation series. In cladistics, characters used for inferring phylogenetic relationships are considered as hypotheses of homology that are subject to tests of similarity. In consequence, such characters can provide useful information on the evolutionary history of complex traits.
The most appropriate answer is C !! all others doesn't make any sense !! go with C !!
Answer:
B. A bridge-like connection is created between bacterial cells for genetic material to be transferred.
Explanation:
A. There is a change in the nucleotide sequence of a DNA molecule. - this is describing a genetic mutation
B. A bridge-like connection is created between bacterial cells for genetic material to be transferred. - this is <u>conjugation</u>, a type of genetic transfer between donor and recipient bacterial cells. It is a way that bacterial cells achieve genetic variation. For example, bacteria can share antibiotic resistance genes between one another. They do not directly contact one another, instead, they use a structure called a pilus to exchange material
C. A bacterial cell takes DNA fragments from a dead cell and incorporates them into their DNA molecule. - this is transformation, another type of genetic transfer where bacterial cells take up bacterial DNA from the environment. These molecules of DNA are usually from dead bacteria
D. There is a transfer of DNA from bacterium to another by a virus. - this is another type of gene transfer called transduction, where a virus takes genetic material from one bacteria to another.