Which is an example of a vestigial structure?A. A fish fin
B. Tailbone of a human
C. Tail of a monkey
D. Flower of a plant

Answers

Answer 1

Answer:

Answer: Tailbone of human

Explanation: The organs in the human body that are of no use now. These structures have lost their original functions in the body of the organism.

Although the vestigial organs have lost their original functions but it can develop new functions over time.

Example: Tailbone of humans, wisdom teeth are no longer used in human beings.

Answer 2

Answer: Tailbone of a human- A vestigial structure is one that has become useless or of no purpose with evolution. Humans have tail bones but they are not used as tails or in any way.

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The sporophyte is much larger than the gametophyte ina. vascular plants.
b. non-vascular plants.
c. bryophytes.
d. mosses.

Answers

The sporophyte is much larger than the gametophyte in vascular plants.

The correct answer is a. vascular plants.

Vascular plants with larger sporophytes are gymnosperms, examples are conifers such as Cycas, Pinus and angiosperms, examples flowering plants are mango, sunflower. The dominant phase in these plants are diploid, independent sporophyte which produces two types of spores. Gametophyte is short lived and dependent on sporophyte.

5. Which of the following accurately reflects the beliefs on Earth's early history? A. Scientists believe the early atmosphere lacked the oxygen necessary to support modern human life. B. Scientists believe that DNA may have existed before RNA. C. Scientists believe that microspheres nearly prevented the development of early life.

Answers

The answer is (a.) Scientists believe the early atmosphere lacked the oxygen necessary to support modern human life.

The Theory of Spontaneous formation of organic molecules suggested that there are less oxygen to support the modern human life. In this theory, it is suggested that the abundant gases found in the atmosphere are CO2 and N2.

How many carbon atoms are in three molecules of carbon dioxide

Answers

Answer:

Hi there! Hopefully this answer helps! If it doesn't, let me know!

Explanation:

For every three turns of the Calvin cycle, three atoms of carbon are fixed from three molecules of carbon dioxide.

Because prokaryotes do not have many specific structures, they

Answers

they do not have specific functions. hope this helped

do not have many specific functions

Guppies are small, tropical freshwater fish that display wide variation in coloration. Some have bright splotches of blue, red, and orange, while others are quite drab and dull. Research has shown that females prefer to mate with brightly colored males; however, this trait makes them more likely to be seen. Guppies, like all species, must be able to both survive and reproduce in order to avoid extinction What is one factor that can affect what color trait is selected for a particular environment?

Answers

Gene recombination is the most likely factor which can affect what color trait is selected for a particular environment. Genetic recombination is generally observed in sexual reproduction.

What is Gene recombination?

Gene recombination is a process of producing new combinations of the genetic material which occurs through alleles by the recombination of the DNA molecules in the nucleus. In this process, there is an exchange of genetic material that is DNA (deoxyribonucleic acid) between two different chromosomes or between different regions of the same chromosome in an organism.

Genetic recombination is important as it provides a constant DNA homogenization within a species and, therefore, species integrity as an elementary structure which is responsible for the preservation and rise in the level of ecological stability of the organisms in evolving lineages and increase in the survival rate of the organism.

Learn more about Gene recombination here:

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After reading the small text about the Guppies and the importance for them to survive and reproduce in order to avoid extinction gave a pretty general idea of the factors that can affect what color trait is selected for a particular environment. These will be listed below:

Answer: Mutation, Sexual reproduction, meiosis/crossing-over, recombination of genes, natural selection, sexual selection.

I hope this helps, Regards.

Is an Aardvark an Invertebrate, Chordate, or Vertebrate?