Answer:
The gametophyte is green and nutritionally independent in mosses, liverworts, and fern.
Explanation:
The gametophyte is the sexual stage of growth in plants and algae.
During this stage, there is production of reproductive organs which produce sex cells.
During this stage, the gametophyte is independent since it relies fully on itself for food production.
The presence of chlorophyll enables this independence.
The gametophyte produces its own food through photosynthesis.
Comparing DNA
Darwin could compare only the anatomy and embryos of living things. Today, scientists can compare their DNA. Similar DNA sequences are the strongest evidence for evolution from a common ancestor. Look at the diagram in Figure 9.3
Answer:
The genetic modification variations result in the change in the genome of the organism. In this case, the variations result in expression of a trait in different form than usual. These variations results in genetic mutation, which can be inherited from one generation to another.
In sexual reproduction, the genome of the organism is not altered. In this only an exchange between the maternal and the maternal alleles takes place, these changes does not result in mutations.
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