Point mutation because 1 base has been changed
THE FAT CAT ATE
THE FIT CAT ATE
each 3 letters(codon) translates into an amino acid, then to a protein
Which gender goes with which chromosome pair in sex linked genes?
XY=boy(the y doesn't get a gene)
Why are the F1s purple when the P1s are green?
The dad was homozygous/dominant and P1 was homozygous/recessive so the baby had a 100% chance of being purple
Characteristics of Life
G-growth and development
R-respond to environment
S-stable and internal balance
Which organism is the smallest on this list?
E Coli bacterium
Scientists discovered a fossil of what may have once been alive, from a Mars rock. It looks like a strand of connected circles. Which one of the eight characteristics of life did it appear to exhibit?
A raw potato releases oxygen gas when a special solution (hydrogen peroxide) is added. A baked potato does not. Which of the eight characteristics of life appears to be demonstrated in the RAW potato from THIS activity?
In pond water under a classroom light microscope, what characteristic of life do you observe directly?
Response to environment
If you wanted to create a culture of microorganisms to observe under a microscope, what would be the best to add if you start off with a container of pure water?
Dusty hay from lawn clippings
Bob wants to do an experiment to test a new plant fertilizer that guarantees to double the growth rate for seedlings. he sows three sets of seedlings with similar soil and light conditions. Set A gets pure water. Set B gets water with fertilizer and Set C gets no water at all. The control is?
When using a microscope you first...
find a specimen on the slide and focus using low power, then go to high power
Observation is important in laboratory science today because...
Discoveries are still possible all around us if we observe carefully
How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY?
Situations such as a pink flower in which one allele for a gene, white flower, is exhibited in a blended form with another allele, red flower, for that gene are called
A cross of a black chicken(BB) and a white chicken (WW) produces all speckled offspring (BBWW). This type of inheritance is known as
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
During normal mitotic cell division, a parent cell having four chromosomes will produce two daughter cells, each containing 2, 4, 8, or 16 chromosomes?
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases...
What happens during the process of translation?
The cell uses information from messenger RNA to produce proteins
Which of the following is not a (point) gene mutation?
If a specific kind of protein is not continually used by a cell, the gene for that protein is...
expressed differently or turned on and off at different times.
The process of making changes in the DNA code of a single living organism is called what?
On an electrophoresis gel, band B is closer to the positive end than band A. So...
Band B moved faster than band A
Which of the following contains all of the others inside it?
A gene such as a fluorescent gene that makes it possible to distinguish bacteria that carry plasmid (and the foreign DNA) from those that don't is called a...
What is an advantage of using transgenic bacteria to produce human proteins?
Transgenic bacteria can produce human proteins in large amounts inexpensively
To produce transgenic bacteria that makes insulin, what step did the scientist have to use first?
Use a restriction enzyme to cut out the insulin gene from human DNA
Colorblindness is found in males more than females because?
The allele for colorblindness is recessive and located on the X chromosome
The chromosome abnormality that occurs when one chromosome breaks off and is added to a different chromosome is called what?
Modern sea star larvae resemble some primitive vertebrate larvae. This similarity may suggest that primitive vertebrates...
share a common ancestor with sea stars
Monkeys on two continents, although similar, show numerous genetic differences. What factor is probably most important in maintaining these differences?
Based on the adaptations Charles Darwin observed in finches and tortoises in the Galapagos, what did he wonder?
If all species living on different islands had once been members of the same species
What is a major concept included in Lamarck's theory of evolution?
Body structure can change according to the actions of the organism
The species of finches that Darwin found on the islands displayed different structural adaptations. What was one of the adaptations that Darwin noted?
The birds' different-shaped beaks
Lamarck's theory of evolution includes the concept that new organs in a species appear as a result of what?
The actions of organisms as they use or fail to use body structures
Why does the geographic isolation of two populations of a species tend to increase differences between their gene pool?
Because it prevents interbreeding between the populations
What is the type of genetic drift that follows the colonization of a new habitat by a small group of individuals?
The founder effect
What situation might develop in a population having some plants whose flowers open at midday and other plats whose flowers open late in the day?
In each generation, the wings of experimental fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal wings. This observation would tend to disprove which idea that evolution is based on?
Inheritance of acquired characteristics
What is one similarity between natural selection and genetic drift?
They both involve a change in a population's allele frequencies
Natural selection can be best defined as what?
The survival and reproduction of the organisms that are genetically best adapted to the environment
Structures that have a similar evolutionary origin and structure but are adapted for different purposes, such as a bat wing and a human arm
In a population of finches in which one group of birds has a short, parrot-like beak and another group has a long, narrow beak, what process has probably occurred?
When individuals at only one end of a bell curve of phenotype frequencies have high fitness, the result is what?
If an allele makes up one fourth of a population's alleles for a given trait, its relative frequency is what percent?
Hawaiian honeycreepers are a group of birds with a similar body shape and size. However, they vary greatly in color and beak shape. Each species occupies its own niche and is adapted to the foods available in its niche. The evolution from a common ancestor to a variety of species is an example of what?
The flying squirrel of North America closely resembles the flying phalanger of Australia. They are similar in size and have long bushy tails and skin folds that allow then to glide through the air. The squirrel is a placental mammal, while the phalanger is a marsupial. These close resemblances, even though genetically and geographically separated by great distances, can best be explained by what?
All the genes of all member of a particular population make up the population's what?
James Hutton's and Charles Lyell's work was important to Darwin because these scientists suggested what?
That Earth was old enough for evolution to have occurred
remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species.
The separation of populations by barriers such as rivers, mountains, or bodies of water
A species is a group of similar organisms that can do what?
Mate with each other and produce fertile offspring
What did Darwin infer from his observations of organisms in South America and the Galapagos Islands?
A small number of different plant and animal species had come to the Galapagos Islands from the mainland
According to Darwin's theory of natural selection, individuals who survive are the ones best adapted for their environment. Their survival is due to what?
The possession of inherited adaptations that maximize fitness
If a mutation introduces a new skin color in a lizard population, which factor might determine whether the frequency of the new allele will increase?
whether the mutation makes some lizards more fit for their environment than other lizards
While looking for fossils on an eroded hillside, you discover fossil coral and fish in one layer. In a layer just above, you find the fossil imprint of a fern frond and some fossil moss. Assuming the rock has not been disturbed, what is the most probable conclusion?
A sea has been replaced by land in ancient times
made up of carbon, hydrogen, and oxygen atoms; living things use this as their main source of energy; Ex: starches and sugars
made up of mostly carbon and hydrogen atoms; living things use this to store energy; Ex: fats, oils, and waxes
made up of hydrogen, oxygen, nitrogen, carbon , and phosphorus; they store and transmit hereditary, or genetic, information; Ex: DNA, RNA
made up of nitrogen, carbon, hydrogen, and oxygen; they are polymers of molecules called amino acids; some control the rate of reactions and regulate cell processes; some are used to form bones and muscles; others transport substances into or out of cells or help to fight diseases
small particles of RNA and protein found throughout the cytoplasm and on the Rough ER; assemble proteins
where lipid components of the cell membrane are assembled, along with proteins and other materials that are exported from the cells
modifies, sorts, and packages proteins and other materials from the ER for storage in the cell
organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use
Two nuclear membranes form, cell begins to pinch apart, chromosomes "blur" into chromatin