genetics

genetics - BME 111 Quiz 11 Questions Genetics 1 A recessive...

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BME 111 Quiz 11 Questions: Genetics 1) A recessive allele of a gene -is present in all genotypes -is always detected in the phenotype no matter what the other allele is -can only be detected in the phenotype when there are two copies of this allele -controls the expression of other genes 2) Point mutations always change the protein sequence when the occur in the coding region. -True -False ( because they may or may not occur , just elaborating on the answer) 3) A dihybrid cross between two organisms that are heterozygous at each gene under scrutiny reveals -one-fourth of the gametes are recessive for each allele -all of the gametes are the same genotype -nine-sixteenths of the offspring express both dominant phenotypes -one-sixteenth of the offspring express the recessive phenotype for both alleles -All of the above -A, C, D 4) One of the 2 8X chromosomes in females is randomly inactivated. - True -False 5) diploid means -1 copy of every chromosome -2 copies of every chromosome -2 copies of every cell -4 copies of every chromosome -happy people 6) When doing a dihybrid cross, what assumption is made? -That the genes under scrutiny are on different chromosomes and assort independently. -That the genes under scutiny are all on the same chromosome. -That all the alleles are recessive. -That the seeds are all green. 7) homozygous in genetics refers to -two copies of each chromosome -two copies of each protein -two different alleles being present in a specific organism's genome for a specific gene -two copies of the same allele being present in a specific organism's genome for a specific gene 8) heterozygous in genetics refers to -two different alleles being present in a specific organism's genome for a specific gene -two copies of the same allele being present in a specific organism's genome for a specific gene
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This note was uploaded on 08/27/2009 for the course BIO 123667 taught by Professor Pauken during the Spring '09 term at ASU.

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genetics - BME 111 Quiz 11 Questions Genetics 1 A recessive...

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