When marking genetic changes on a phylogenetic tree what information is NOT included in the proper notation?
A. Identity of outgroup nucleotide
B. Identity of new nucleotide
C. The most common nucleotide
D. Nucleotide position number
Ans: C. The most common nucleotide
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Which of the following statements below is false?
A) At meiosis I, the X and Y chromosomes line up as if they were homologs. B) Normally in humans, all the sons of a male showing an X-linked phenotype will inherit the trait. C) Normally in humans, a male that is carrying an X-linked dominant trait will pass it to all his daughters. D) Normally in humans, all the sons of a female homozygous for an X-linked recessive gene will inherit that trait. E) Normally in humans, females are carriers of X-linked recessive traits if they are heterozygous.
Genes are physically located within ______.
A. chromosomes B. centrosomes C. kinetochores D. microtubules
An oxygen atom has ____ surrounding a nucleus composed of ____
a. neutrons; electrons and protons b. electrons; protons and neutrons c. protons and electrons; neutrons d. protons; neutrons and electrons e. electrons and neutrons; protons
The outer layer of cells that protects the plant is called the
A. vascular tissue. B. endoderm. C. epidermis. D. pericycle.