Why is possible to detect the mutation causing Huntington disease at any age?
A) It is possible to detect the mutation causing Huntington disease at any age because it is a single-gene disorder.
B) It is possible to detect the mutation causing Huntington disease at any age because it affects consecutive generations.
C) It is possible to detect the mutation causing Huntington disease at any age because it is caused by the mutation of linked genes.
D) It is possible to detect the mutation causing Huntington disease at any age because it is influenced by the immediate environment.
A) It is possible to detect the mutation causing Huntington disease at any age because it is a single-gene disorder.
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What is the role of pepsin?
a. it begins protein digestion in the stomach. b. it begins starch digestion in the oral cavity. c. it begins lipid digestion in the small intestine. d. it is a cofactor in enzymes that break down toxins. e. it is a cofactor in enzymes that break down hydrogen peroxide
If meiosis did not occur in sexually reproducing organisms,
a. growth of the zygote would be halted. b. mitosis would be sufficient. c. gametes would be haploid. d. the chromosome number would double in each generation. e. eggs would be haploid, but sperm would be diploid.
Which of the following is a good example of two genes that are orthologous?
A) the promoter and the repressor genes of the lac operon in E. coli B) the genes for the first two enzymes in the glycolytic pathway C) the gene for the photosynthetic enzyme RuBisCO in a fern and in an oak D) the human gene for the cell surface protein Siglec-12, and the human pseudogene Siglec-13 E) None of these pairs are orthologous.
The connective tissue membrane that covers the bone is called the periosteum
____________________ Indicate whether the statement is true or false.