If an organism is an inversion heterozygote, __________
A) homologous chromosomes align during meiosis through formation of an inversion loop at synapsis
B) homologous chromosomes align during meiosis through formation of a Holliday junction at synapsis
C) non-homologous chromosomes pair during meiosis due to the translocation of genes between two different chromosomes
D) it will experience normal chromosome synapsis during meiosis
E) it will be unable to complete replication due to DNA damage, and the cell cycle will be arrested
A
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The best conclusion concerning delta is that the cells _____
A) contain no DNA. B) contain no RNA. C) contain only one chromosome that is very short. D) are in the G0 phase. E) divide in the G1 phase.
A region where neurotransmitter molecules stimulate a neuron is indicated by the letter _____
a. A b. B c. C d. D e. C and D
A freshwater pond ecosystem includes only the living organisms within the pond
Indicate whether the statement is true or false
Viral proteins can damage host cells by:
a. increasing the rate of fermentation within the host. b. producing endotoxins. c. causing a decline in coordination and increased irritability. d. preventing transcription of viral nucleic acids. e. overwhelming the host cell with a large number of viruses.