13. The genetic code is universal. What does this mean? A. There is only one cod

Question

13. The genetic code is universal. What does this mean? A. There is only one codon for each amino acid. B. All scientists agree on the translation of the code. C. All living things follow the same code. D. Every living thing expresses the same genes 14. A man is described as being Aa for the hemoglobin gene. 'Aa' is referred to as his a. Phenotype b. Genotype c. Blood group d. Genome 15. Recessive X-linked traits are often more common in men because B, men only have one allele for these traits. A. testosterone turns on the disease genes. C men do not express genes on the X chromosome. D. men are homozygous for these traits. 16.If a heterozygous female for the hemoglobin genes had children with the heterozygous male, what would Mendel's rules predict the approximate ratio of different genotypes to be of the offspring? a. 3:1 b. 9:33:1 c. 4:0 17. Genes are described as being dominant, recessive, etc. The sickle cell trait illustrates which of the following? a. Dominance b. Recessivity C. Codominance d. Incomplete dominance 18. People with Typeblood are called universal donors because b. AB; they provide all types of glycoproteins on the surface c. O; they have no glycoprotein on surface to elicit an immune response d. A; this glycoprotein can not elicit an immune response e. AB because all mammals have immune systems which recognize these glycoproteins as 'self

Explanation / Answer

The answers are as follows:

13)C) all living things follow the same code.

14) B) genotype

15)B) Men only have one allele for these traits.

16)D) 1:2:1

17) C) codominance

18)C) O: they have no glycoprotein on the surface to elicit an immune response.

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