Biology, 28.06.2019 01:30 cowerdwhisper23
Which characteristic would be most important when a scientist needs to study the changes in climate condicions over a five year period
Answers: 1
Biology, 21.06.2019 17:00
The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.
Answers: 1
Biology, 21.06.2019 23:30
Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries
Answers: 2
Biology, 22.06.2019 03:50
The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above
Answers: 1
Biology, 22.06.2019 07:00
What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele
Answers: 3
Which characteristic would be most important when a scientist needs to study the changes in climate...
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