Sequencing the genes of humans is important because
A) it provides information on how to build lipids in the cell.
B) it will allow scientists to create human clones.
C) knowing the nucleotide sequence of human genes will aid in the treatment of diseases caused by them.
D) it will give us a better understanding of agricultural animals.
C
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The location of a gene on a chromosome is called its _____________
A. karyotype B. allele C. locus D. homolog
Which groups of microorganisms are most likely to be found on the skin?
a. Bacteria, yeast and protozoa b. Protozoa, bacteria and fungi c. Yeast, fungi and plant spores d. Fungi, bacteria, and yeast e. Protozoa, yeast and fungi
In the presence of both lactose and glucose, which of the following occurs with the E. coli lac operon?
A. The lacI gene does not produce repressor. B. The lacZ and lacY genes are fully expressed. C. The cAMP-CAP complex is not available to bind near or at the lac promoter. D. Lactose is converted to glucose and galactose. E. Lactose binds to the operator.
Answer the following questions true (T) or false (F)
1. It generally takes the enzymes from dozens of sperm for one sperm to gain access to the oocyte membrane. 2. Sperm cells do not need a nucleus and expel it during development as a weight-saving tactic. 3. Human embryos do not go through a morula stage of development as do most other animals.