Most inherited human disorders are the result of
a. recessive mutations of genes located on autosomes.
b. dominant mutations of genes located on the X chromosome.
c. recessive mutations of genes located on the Y chromosome.
d. simultaneous mutations of the same gene on homologous chromosomes.
a. recessive mutations of genes located on autosomes.
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Depending on the type of regulatory mechanism, activators and repressors can bind to operator regions which control transcription
Indicate whether the statement is true or false.
Which lineage contains animals with a nerve net? Select all correct choices
A. sponges B. cnidarians C. bilaterans
Which of the following statements describes the law of segregation?
a. Two alleles will be inherited together during gamete formation. b. Two genes will be inherited together during gamete formation. c. Two alleles will segregate during gamete formation. d. Two genes will segregate during mitosis.
In aquatic environments, the three major environmental gradients of water that directly influence the distribution and dynamics of communities include
A) temperature, depth, and oxygen content. B) depth, flow rate, and salinity. C) pressure, temperature, and depth. D) flow rate, salinity, and oxygen content.