Microorganisms that are members of the normal microbiota are also known to cause disease
Indicate whether the statement is true or false
TRUE
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A phylogenetic tree is a diagram that describes a phylogeny. A phylogeny is
A. the evolutionary history of a species or group of species. B. the geographic distribution of populations in a species. C. the generations of individuals in a population. D. the distribution of species in a given area in time. E. a list of character traits of individual species set in a tree diagram.
Gray whales spend the winter months in the Bering Sea where they mate and give birth
Indicate whether the statement is true or false
Mendel was the first to propose that allele pairs segregate from each other when gametes are formed, which is known as Mendel's law of segregation. We now know that segregation of alleles is a result of the behavior of chromosomes during meiosis. Segregation of alleles in meiosis will happen when which of the following occurs?
A) Homologous chromosomes separate during meiosis I. B) Homologous chromosomes separate during meiosis II. C) Sister chromatids separate from each other during meiosis I. D) Homologous chromosomes undergo crossing over.
Which statement about locomotion is true?
A) Locomotion requires energy to overcome friction and gravity. B) Gravity is a greater locomotion problem for animals in water than for those on land. C) Overcoming friction is a greater locomotion problem for land animals than for those that live in water. D) Bone strength is more important than body shape in the locomotion of land animals.