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Unit 5 Quizzes
| Question | Answer |
|---|---|
| Two heterozygous red-coat (Rr) rabbits are mated. What is the probability of their offspring being red-coats? 1/4 3/4 0/4 2/4 | 3/4 |
| White fruited plants (WW) are crossed with yellow fruited plants (ww). What kinds of plants are produced? All heterozygous white fruit 1/2 white, 1/2 yellow fruit All homozygous white fruit All heterozygous yellow fruit | All heterozygous white fruit |
| What type of trait only shows if both alleles for it are present? multiple recessive phenotypic dominant | recessive |
| According to Mendel's Law of Segregation, the members of a gene pair separate during gamete formation divorce fertilization mitosis | gamete formation |
| In squash plants, a gene for white fruit color (W) is dominant over its allele for yellow color (w). If one parent is heterozygous and 1/2 of the offspring are yellow, what was the genotype of the other parent? WW ww Ww | ww |
| If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of? dominance incomplete dominance multiple alleles codominance | incomplete dominance |
| A recessive trait will be observed in individuals that are _______________ for that trait. heterozygous homozygous or heterozygous homozygous dominant homozygous recessive | homozygous recessive |
| The observable traits expressed by an organism are described as its __________. alleles phenotype genotype zygote | phenotype |
| During gamete formation, genes for different traits separate without influencing the inheritance of other traits. This illustrates which Law/Principle? principle of genetics law of dominance law of independent assortment law of segregation | law of independent assortment |
| Mendels' principle of ______________ states that alleles from a single gene are distributed into different gametes during meiosis. segregation genetic variation dominance inheritance | segregation |
| If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C? 30% 23% 54% 27% | 23% |
| DNA double helix does not have which of the following? phosphate group antiparallel configuration uracil complementary base pairing | uracil |
| Meselson and Stahl's experiments proved that DNA replicates by which mode? semi-conservative dispersive conservative none of the options | semi-conservative |
| Purines and pyrimidines are categories of which molecules that are used in DNA? amino acids bases sugars phosphates | bases |
| Chargaff is credited with what part of the DNA discovery? discovering the DNA is an acid proposing DNA as the hereditary material Showing that A bonds with T and C bonds with G showing how the molecule is bonded together | Showing that A bonds with T and C bonds with G |
| A nucleotide of DNA consists of which of the following? all options deoxyribose a purine or a pyrimidine a phosphate group | all options |
| Which of these is NOT a form of point mutation? nonsense mutation missense mutation silent mutation frameshift mutation | frameshift mutation |
| Mutations within DNA can be all options inheritable beneficial lethal | all options |
| A nonsense mutation is one that has no effect on the product made changes a codon for an amino acid into a stop codon shifts all codons to the left or right changes one amino acid for another | changes a codon for an amino acid into a stop codon |
| In a prokaryotic cell DNA replication begins at multiple origin sites prokaryotes cannot do replication in the nucleus one origin site | one origin site |
| The process of synthesizing mRNA from DNA is known as translation replication transcription transformation | transcription |
| Which of these represents a codon found on an mRNA strand? CGT UAC CAT TAT | UAC |
| How many amino acids would a protein contain if the gene that coded for it had this sequence of DNA: 3' TACCCGGATTCA 5' 3 1 2 4 | 4 |
| Which molecule below has the role of bringing the transcribed information from the DNA out to the ribosome? siRNA rRNA tRNA mRNA | mRNA |
| The RNA that picks up and carries an amino acid to add to the growing polypeptide chain is rRNA tRNA mRNA any can do it | tRNA |
| Transcription of DNA begins at a place on the molecule called the sequencer promoter activator terminator | promoter |
| Which of the following codons on mRNA is the start code that begins every protein chain? TAT UAC AAA AUG | AUG |
| The DNA sequence TACGCATTACTC codes for the following amino acid chain Genetic Code.png met - arg - asn - glu asp - arg - ser - stop met - his - gln - thr met - arg - asn - asp | no photo womp womp |
| Before an mRNA molecule is mature (ready to leave the nucleus) which of the following must happen? all exons are deleted a cap and tail are added the tRNA must carry it to the ribosome the mRNA must replicate itself like DNA does | a cap and tail are added |
| A nonsense mutation is one that has no effect on the product made changes a codon for an amino acid into a stop codon changes on amino acid for another shifts all codons to the left or right | changes a codon for an amino acid into a stop codon |
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mortehay000
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