An F1 organism is always homozygous
Indicate whether the statement is true or false.
ANS: F, heterozygous
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Processes that regulate cell division in mammals include:
A. rapid production of cyclin proteins that activate CDK enzymes. B. activated cyclin-CDK complexes trigger cell cycle events. C. different cyclins and CDKs act at different stages of the cell cycle to promote cell division. D. rapid degradation of cyclins after CDK activation. E. All of these choices are correct.
Destruction of the motor areas in the left cerebral cortex results in the loss of:
a. sensation on the right side of the body b. sensation on the left side of the body. c. voluntary movement on the left side of the body d. voluntary movement on the right side of the body e. the ability to speak
DNA sequencing data from the Human Genome Project indicates that there are about ________ protein-coding genes.
A. 100,000 B. 140,000 C. 20,000 D. 30,000
With regard to their genomes, what is one major difference between viruses and bacteria?
a. Viral genomes are RNA; bacteria genomes are DNA. b. Viral genomes can be replicated faster than bacterial genomes. c. Viruses cannot replicate their own nucleic acids; bacteria can.