5 Written Questions
5 Matching Questions
- What is artificial selection?
- What is the purpose of a test cross?
- What is a Punnett square? What is a pedigree? How are they different?
- Why did Mendel use garden peas?
- What are purines and pyrimidines?
- a 1) They have very contrasting traits
2) Can both self-pollinate and cross pollinate
3) Easy to grow
- b Punnett Square- Model that predicts the likely outcome of a genetic cross
Pedigree- family history that shows how a specific trait has been inherited over many generations
Differences- Punnett squares: show possible outcomes of a cross; pedigrees- can determine sex linkage, dominant alleles and heterozygousity of parents
- c Purines are bases of DNA (Adenine and Guanine)
-composed of 2 rings of carbon and nitrogen per base
Pyrimidines are bases of DNA (Thymine and Cytosine)
-composed of one ring of carbon and nitrogen atoms per base
- d To determine genotype of a parent who is expressing the dominate allele; to see if this parent is homozygous dominant or heterozygous.
- e The idea that breeders may select traits that are more desirable by using only certain types of breeds that have the traits they want
5 Multiple Choice Questions
- 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
- deletion- occurs when a piece of chromosome is lost
duplication-occurs when a piece remains attached to its homologous chromosome after meiosis
inversion- occurs when a piece reattaches to its original chromosome but in the reverse direction
translocation- occurs when a chromosome piece breaks off and reattaches to a completely different non homologous chromosome
- Genotype- the combo of 2 alleles that determines a trait.
Phenotype- trait that results from a given combination of alleles.
Genotype determines phenotype
- 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
- They regulatory proteins and activate or repress transcription of specific genes
5 True/False Questions
Chapter 14 → ...
What makes up a nucleotide in DNA? RNA? → In DNA: Adenine with Thymine, Guanine with Cytosine
In RNA: Adenine with Uracil, Guanine with Cytosine
Describe 7 properties of life → 1) cellular organization- all living things are made of one or more cells.
2) metabolism- the sum total of all chemical reactions.
3) homeostasis-the ability to maintain stable internal conditions with a changing external environment.
4) responsiveness- reaction to environment.
5) reproduction- making more of oneself.
6) growth- developing
7) heredity- passing of traits from parent to offspring.
What is crossing over? When does it occur? Why is it important? → The process of change by which new species develop from preexisting species over time
The idea of natural election if why evolution happens
Individuals with traits advantageous to survival will produce more offspring
Over time the number of individuals possessing those traits will increase in a population
What is TSS? What are some of the first symptoms? → TSS is toxic shock syndroms.(Is a severe illness that results when vaginal bacteria secret toxins that get into the blood stream)
Some of the fist symptoms are flu like symptoms including vomiting, dizziness and fever.