Which of the following statements is false?
a. The SRY gene is absent in all females.
b. The SRY gene apparently is the gene that
controls the development of male sexuality.
c. The development of maleness is by default
because males lack two X chromosomes.
d. The human Y chromosome carries 307 genes.
e. Genes on the X chromosome govern color
vision.
Answer: c
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Suppose you wanted to investigate ideas on how polymerization of prebiotic organic molecules may have occurred on the early Earth. Which of the following scenarios might best be utilized for this?
A. Mix some RNA nucleotides in water and heat them to boiling temperatures. B. Mix some amino acids (protein building blocks) in water and add a strong acid or a strong base. C. Mix some RNA nucleotides in water and repeatedly wet and dry them on clay. D. Mix some amino acids (protein building blocks) in water and add a bacterium harmless to humans. E. Mix some amino acids in salt water and cool down to 0? C.
In which process are existing protein regions or domains mixed in novel combinations to produce new proteins?
a. alternative splicing b. degeneracy c. exon shuffling d. the wobble hypothesis e. aminoacylation
What are the alternate forms of a gene?
A) alleles B) chromosomes C) gametes D) homologues
As a result of mitosis, each of your body cells
A) contains only the genetic information needed for that type of cell. B) changes genetically as you grow and develop. C) contains unique genetic information. D) is genetically identical to all other body cells.