Consider the cell cycle of a human cell. During G2, what is the state of the homologous chromosomes?
A. The homologous chromosomes are lined up on the equator of the cell.
B. The homologous chromosomes have all been copied through DNA replication and are beginning to condense.
C. The homologous chromosomes have been pulled to their respective poles by the spindle apparatus.
D. The homologous chromosomes have not been replicated yet.
E. The homologous chromosomes are now in the haploid or n condition.
B. The homologous chromosomes have all been copied through DNA replication and are beginning to condense.
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In human blood groups, the fact that an individual can have an AB blood type is an example of ___________
A. incomplete dominance B. incomplete penetrance C. sex-influenced trait D. temperature-sensitive conditional allele E. codominance
FSH and LH are secreted by the:
a. hypothalamus b. ovaries c. anterior pituitary d. testes e. uterus
A honeybee's dance in its dark hive around a crowd of fellow workers conveys where food is, relative to the direction of the sun. This is an example of ____ communication
a. visual b. chemical c. tactile d. acoustical e. direct
All known organisms appear to translate genetic information to protein molecules via the same genetic code. This finding strongly supports the hypothesis that __________.
a. all organisms are descended from a single common ancestor b. there's only one possible way to encode information in a macromolecule c. the genetic code is of relatively recent evolutionary origin d. scientists have yet to accurately decipher the genetic code e. None of the listed responses are correct.