Final Exam - Assessment Flashcards
What is heredity?
When parents pass on their genes to their offspring
What would streptococcus look like under a microscope?
The two parts of the name give you a clue
Streptococcus cells would appear round, and their bacterial colony would live in a chain
Is chicken pox a bacteria or a virus?
virus
What are the four main parts of Natural Selection?
- Overproduction - Each species produces many offspring that can survive and reproduce
- Inherited variation - There are differences among organisms of the same species
- Survival of the fittest - Individual organisms with certain traits (or adaptions) have a better chance of surviving
- Successful Reproduction - These organisms reproduce, passing on the favorable traits
Who discovered the vaccine for small pox?
Edward Jenner
How many chromosomes are in a human sex cell?
23
What are the differences between a monocot and a dicot?
Where are genes found?
In your chromosomes
What are alleles?
Letter combinations that represent our genetics
What are the four parts of the blood and what are the characteristics of each?
- Plasma - fluid part (50%)
- Red blood cells (RBCs) - carry oxygen
- White blood cells (WBCs) - infection fighters
- Platelets - help clot the blood
After being provided the definition, name the term:
The first person to classify organisms as animals or plants 2,300 years ago.
Aristotle
What is the difference between co-dominance and incomplete dominance?
- Co-dominance - When the two traits are both visible in the phenotype
- Incomplete dominance - When the traits blend or mix together to form a new trait
Neither trait dominates over the other in co-dominance and incomplete dominance
What is polygenic inheritance?
When more than one gene influences a trait
Provide examples of human traits that fall under polygenic inheritance.
- Eye color
- Hair color
- Skin color
- Height
- Weight
What does it mean to be homozygous dominant?
You have two alleles that are the same, and they are both dominant (uppercase)
Ex.) HH, BB, PP, OO
What does it mean to be homozygous recessive?
You have two alleles that are the same, and they are both recessive (lowercase)
Ex.) hh, bb, pp, oo
What does heterozygous mean?
You have two alleles that are different for a particular trait
Ex.) Hh, Bb, Pp, Oo
What are the male and female chromosomes?
- Y chromosome - male
- X chromosome - female
What is a karyotype? What chromosome determines the sex of a baby? What does an extra chromosome on the 21st pair indicate?
- A karyotype is a picture that allows scientists to study the chromosomes of an individual, sometimes even before birth
- The chromosomes that determine the sex of the baby are the 23rd pair
- An extra chromosome on the 21st pair indicates that the child has down syndrome
Which blood type is the universal receiver?
AB
Who is the Father of Genetics?
Gregor Mendel
Provide the definition of the term:
pedigree
a tool used to help trace the occurrence of traits in a family
Fill in the blanks of the pedigree key:
What is the difference between phenotype and genotype?
- Phenotype - The way that genes appear in real life (physical appearance)
- Genotype - The letter combination that gives you certain traits, or the appearance of genetics in letters
Phenotype example:
blond hair, freckles, blue eyes
Genotype example:
Ab, XY, or BP
Answer the question with the best available option:
In order for a male child to be produced, an egg must be fertilized by a sperm containing what chromosome?
A. X
B. XX
C. Y
D. XY
C. Y
An egg already contains an X chromosome, so all it needs is a Y chromosome, not an XY chromosome
What is the hidden allele called?
Recessive allele/trait
What are sex linked disorders?
Some genes are carried on the sex chromosomes, mainly on the X chromosome. If your X chromosome(s) is/are affected (or contains the “bad” gene), then you have a sex linked disorder.
Provide two examples of sex linked diseases.
- Color-blindness
- Hemophilia
How do you find probability on a Punnett Square?
You divide the number of squares representing the genotype or phenotype of interest by the total number of squares
Provide the definition of the term:
vestigial structures
Remnants of once-useful structures
Provide three examples of vestigial structures in humans.
- appendix
- tonsils
- wisdom teeth
Provide an example of a vestigial structure in whales.
femur
Provide the definition of the term:
embryology
The science of comparing the similarities of organisms in the early stages of development
What is the difference between homologous and analogous structures?
- Homologous structures - same bone structure but different jobs (arm of human + flipper of dolphin)
- Analogous structures - same function but different bones (bird wing + butterfly wing)
What two factors provide the basis for genetic variation within a population?
- Sexual reproduction (variation in genes)
- Genetic mutations
Provide the definition of the term:
inherited variation
differences in traits or characteristics among organisms of the same species
Who is the evolution guru?
Charles Darwin
What type of rock are most fossils found in?
Sedimentary
What is an adaptation and how does it help an organism?
An adaptation is a trait or characteristic that enhances an organism’s ability to survive and reproduce in its environment
Ex.) webbed feet, camouflage, venom
Provide the definition of the term:
evolution
The gradual change in organisms over time (millions of years)
Provide the definition of the term:
selective breeding
A process by which humans intentionally breed organisms with desireable traits to produce offspring with those traits
Provide the definition of the term:
interbreeding
breeding with an organism that has a similar genetic make-up
If the gray wolf (a subspecies of wolf) came into contact with the North American gray wolf (another subspecies) and successfully reproduced, then they would interbreed and produce hybrid offspring
Provide the definition of the term:
speciation
the development of a new species
Provide the definition of the term:
mutation
a permanent change in the DNA sequence of a gene
What is the most specific group in the classification system?
species
What is a scientific name and what are the rules about writing one?
- A scientific name is the formal system of giving species of organisms a name composed of two parts.
- There are two major rules about scientific names. The genus name is always capitalized, while the species name is not. Additionally, when typed, the entire scientific name should be italicized, and if written, it should be underlined.
Ex.) Canis lupus
Who is the Father of Taxonomy?
Carolus Linnaeus
What are the eight levels of classification in order from largest to smallest?
- Domains
- Kingdoms
- Phyla
- Classes
- Orders
- Families
- Genera
- Species
Do Kids Prefer Candy Over Fresh Green Salad?
What are the three domains?
- Bacteria
- Archaea
- Eukarya
What are the four kingdoms of the domain Eukarya?
- Protista
- Fungi
- Plantae
- Animalia
What types of plants are nonvascular?
- Mosses
- Liverworts
- Hornworts
(no roots, stems, or leaves)
What is the composition of a virus particle?
The center of a virus has nucleic acid (RNA or DNA) and the virus particle is surrounded by a protein coat
What is a whip-like tail called?
flagellum
What do scientists believe all plants originated from?
green algae
What is the difference between plant fertilization and pollination?
- Pollination - Pollen is carried from anther to stigma
- Fertilization - Sperm fuses with egg in ovule and creates a seed
After being provided the characteristics, name the kingdom:
- Odd organisms
- Some make their own food, some hunt, and some absorb it
- Single celled
protist
Fill in the blanks:
Some characteristics of fungi are:
* They absorb food
* They contain ________ (cell wall)
chitin
List some characteristics of the plant kingdom.
- Make their own food
- Cellulose (cell wall)
True or false? If false, correct the statement:
Members of the animal kingdom hunt for their food.
True
Answer the question with the best available option:
What kingdom contains sense organs?
A. Protista
B. Fungi
C. Plantae
D. Animalia
D. Animalia
Fill in the blank:
Animals contain many _____________ systems.
specialized
What three environments do archaea like to live in?
- Salty - Yellow Stone, Dead Sea
- Heat - volcano, hot geyser
- Methane - swamp, cow intestines
How do bacteria reproduce?
through the process of binary fission
What are the cell walls of fungus made of?
chitin
pronounced kite-in