Information related to the organisms found on Earth during
various geological time periods is...
Information related to the organisms found on Earth during
various geological time periods is represented in the accompanying
chart.
OOEEOC 0-0 C-E
2525
-Edw-
4.6 (?) Billion
600 Million
200 Million
60 Million
Years Ago
Years Ago
Years Ago Years Ago
Precambrian
Paleozoic
Mesozoic Cenozoic
(Simple
(Age of Amphibians, Fishes, (Age of Reptiles) (Age of
Multicellular
and Invertebrates)
Mammals)
a organisms and
First Protists)
Past
Present
Geologic Time
Which statement concerning the first appearance of the organisms
over the time period represented in this chart is most likely
correct?
Answers: 1
Biology, 22.06.2019 10:30, sydney6384
In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.
Answers: 2
Biology, 22.06.2019 12:20, archiecom55
Easy 6th grade work! 100 points! i need fast! compare the parts of a cell and the cell as a whole to another common nonliving system (i. e., a car, a city, describe the parts of a cell and their primary function.
Answers: 3
Biology, 22.06.2019 20:50, Jreye77
Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.
Answers: 1
Biology, 22.06.2019 20:50, vibezkj
Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger
Answers: 1
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