5 Written questions
5 Matching questions
- What are the 3 types of RNA? Describe each.
- In a heterozygous cross, what are the phenotypic and genotypic ratios? What is the likelihood that an offspring will express the dominate trait?
- What does sex linked mean? Which chromosomes usually carries sex-linked traits?
- Chapter 1
- What is the role of DNA polymerase? DNA helicase? RNA polymerase?
- a DNA polymerase- enzyme responsible for adding complementary bases to a replicating DNA molecule, also edits and corrects the replicating strand of DNA
DNA helicase- enzyme responsible for unwinding the DNA strand and breaking H bonds between bases of DNA, allows for replication of the DNA molecule
RNA polymerase- enzyme responsible for opening the DNA molecule at the promoter region of a gene, adds complementary bases according to base pairing rules for RNA until it reaches a stop location on the DNA, produces mRNA
- b Genotypic ratio- 1:2:1
Phenotypic ratio- 3:1
75% chance the dominant trait will be expressed
- c ...
- d mRNA formed by transcription, complimentary strand to the DNA sequence of a gene, carries instructions for the making of a protein from the nucleus to the ribosomes
tRNA reads the mRNA by binding to the codon on the mRNA with the anticodon located on one end of the tRNA at the ribosome during translation, carries a specific amino acid for the codon on the other end of the tRNA, translates it into an amino acid sequence when subsequent amino acids are joined together
rRNA together these for the ribosome, is the site of protein synthesis
- e Sex linked- the allele for the trait is located on the sex chromosomes
Usually carried on the X chromosome
5 Multiple choice questions
- He presented evidence that evolution happens and offered a correct reason as to how
- The making of more of the same species.
The two main types are sexual and asexual reproduction.
Sexual- genetic material is donated from two parents to make a genetically unique offspring.
Asexual- genetic material is donated from one parent to make a genetically identical offspring.
- microevolution- looks at the process by which inherited traits change over time in a population
5 major processes that affect the kinds of genes in a population from generation to generation are migration, mate choice, natural selection , mutation, and genetic drift
macroevolution- looks at the patterns in which new species evolve by studying the direction, diversity, or speed of change. Patterns are convergent evolution, co-evolution, adaptive radiation, extinction, gradualism and punctuated equilibrium.
- The idea that species do not always evolve gradually but actually pretty quickly as their is a sudden dramatic change in environmental pressures causing an increase in many new species to evolve
- Spermatogenesis is for males and it goes through meiosis 1 and meiosis 2 to create 4 haploid gametes that change into sperm cells.
Oogenesis is for females and it goes through 2 stages of meiosis to create 1 ovum and 3 other polar bodies.
5 True/False questions
What is the difference between the haploid number and the diploid number? → Haploid number: 1 set of unpaired chromosomes (half)
Diploid number: 1 set of paired chromosomes (double)
What is the difference between a dominant and a recessive allele? How can you tell the difference between them when they are written down? → A dominant allele is always expressed if it is present while the recessive allele is submissive to the dominant allele and isn't expressed unless paired with another recessive.
Health → The link between microevolution and macroevolution, and is the formation of new species
What are the three main categories of STD? → Bacterial STDs, Viral STDs, Parasitic STDs
What is the legal BAC limit? What factors can affect it? → Legal limit over 21: .08
Legal limit under 21: zero
Factors that can affect it:
weight, gender, size, how much is taken, how fast it was taken, how much food you ate before and age