How do rates of mutation "power" molecular clocks?

1 answer:

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Molecular clocks use rates of mutation to measure evolutionary time. Mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages.

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2. Photosynthetic organisms are also called

rjkz [21]

Answer: photoautotrophs

Explanation:

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Heterotrophs who do not produce there food depends on them and other organic sources for their food.

Example of photoautotrophs include, Algea,plant,bacteria,Euglena.

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In a frog embryo, gastrulation A) is impossible because of the large amount of yolk in the ovum. B) occurs along the primitive s

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Answer:

In a frog embryo, gastrulation E) proceeds by involution as cells roll over the dorsal lip of the blastopore.

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Spores are used by groups of ancient plants and fungi in one stage of their reproduction. ... Spores grow into intermediate plants called gametophytes. Neither of these groups of plants produces flowers. Pollen is used by flowering plants to fertilize seeds.

Explanation:

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Which of Mendel's laws or principles explains that traits are passed from parents to offspring individually instead of as pairs,

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Mendel's law or principle that explains that traits are passed from parents to offspring individually instead of pairs, groups, and/or sets B-The law of independent assortment. Mendel's Law of heredity includes the Law of segregation and the Law of independent assortment. The Law of segregation explains that alleles separate (segregate) during gamete formation and that offspring inherit only one allele from each parent. The Law of independent assortment explains that traits are passed individually and that they are independent of the inheritance of other traits.

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