Biodiversity Basics
The variety of living things found in an area is called this.
What is biodiversity?
This type of reproduction requires only one parent and normally produces genetically identical offspring.
What is asexual reproduction?
Different forms of the same gene, such as a version for purple flowers and a version for white flowers, are called these.
What are alleles?
A characteristic that helps an organism survive or reproduce successfully in its environment is called this.
What is an adaptation?
When every member of a species has died and the species no longer exists anywhere on Earth, it is described by this term.
What is extinct?
Members of the same species are not exactly alike. The differences between individuals are known by this term.
What is variation?
This type of reproduction combines genetic information from two parents and produces genetically different offspring.
What is sexual reproduction?
An organism receives two different alleles for a trait, giving it the genotype Bb. What term describes this genotype?
What is heterozygous?
Humans breed dogs with particular characteristics so those characteristics become more common in future generations. What process is this?
What is artificial selection?
A species disappears completely from Alberta but still has populations living in British Columbia. What term describes its disappearance from Alberta?
What is extirpation, or extirpated?
A forest contains several different species of trees, birds, insects, mammals, and fungi. This variety is an example of what type of biodiversity?
What is species diversity?
A strawberry plant sends out a runner. The runner develops roots and eventually becomes another strawberry plant. What type of reproduction is this?
What is asexual reproduction?
In a species of plant, tall (T) is dominant over short (t). A plant has the genotype Tt. What phenotype will it have?
What Is Tall.
Green and brown beetles live on dark soil. Birds can see the green beetles more easily, so more brown beetles survive and reproduce. Over generations, brown beetles become more common. What process is occurring?
What is natural selection?
A coyote can eat many different foods and live in a wide range of environments. What term describes an organism with this broad range of needs?
What is a generalist?
Two populations of the same species have equal numbers of individuals. Population A has many different inherited traits, while Population B has very little variation. What type of biodiversity is greater in Population A?
What is genetic diversity?
A species lives in an environment that suddenly changes. Some offspring have traits that make them better suited to the new conditions. Which type of reproduction is more likely to have produced this greater variety of offspring?
What is sexual reproduction?
Black fur (B) is dominant over white fur (b). Two heterozygous parents are crossed, Bb × Bb. What percentage of their offspring are predicted to have white fur?
25%.
A few insects in a population have an inherited resistance to a pesticide. After the pesticide is used repeatedly, resistant insects make up more and more of the population. What process caused this change?
What is natural selection?
An animal depends on one specific food source and can only reproduce in one particular habitat. What term describes this type of organism?
What is a specialist?
A large area contains forests, wetlands, grasslands, lakes, and rocky mountain habitats. What type of biodiversity is demonstrated by having all of these different environments?
What is ecosystem diversity?
A population reproduces almost entirely asexually. A new disease arrives and affects nearly every individual in the same way. What important biodiversity advantage is this population missing?
What is genetic variation?
Two animals both show the dominant brown-fur phenotype, but they produce an offspring with recessive white fur. What must be true about the genotype of both parents?
Both parents must be heterozygous (Bb).
Farmers repeatedly breed only the corn plants that produce the largest cobs. After many generations, the average cob size increases. What process caused this change, and who is doing the selecting?
What is Artificial selection, (Who is?) humans doing the selecting.
An environmental change destroys a species' main food source. Species A can eat many different foods, while Species B depends almost entirely on the food that disappeared. Which species is at greater risk of extinction?
Who is Species B, the specialist.