Module:4.2 DIVERSITY of LIFE

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Flashcards on Module:4.2 DIVERSITY of LIFE, created by maryam parveen on 03/14/2017.
maryam parveen
Flashcards by maryam parveen, updated more than 1 year ago
maryam parveen
Created by maryam parveen over 7 years ago
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What is species? A species is the smallest unit of biological classification.
What do you have to look for to determine a species? This is not always easy to observe in nature, so it also important to look at structual,enogical and DNA evidence to determine species.
What are hybrids? Offspring of different species are called hybrids.
Why is it that offspring of different species cannot interbreed to produce fertile offspring? Usually individuals of different species cannot interbreed to produce fertile offspring.
What problems do hybrids normally have? Hybrids often have health problems or are infertile.
Give an examples of hybridisation in animals? 1-From a taxonomic perspective, hybrid refers to. 2-Conspicuous hybrids are popularly named with portmanteau words.
What is taxonomy? The branch of science concerned with classification, especially of organisms; systematics.
What is Linnaeus classification? Carolus Linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. One of his contributions was the development of a hierarchical system of classification of nature
What is morphology? A particular form, shape, or structure.
What is evolution? The process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth
What is a generation? All of the people born and living at about the same time, regarded collectively.
What is beogeography? The branch of biology that deals with the geographical distribution of plants and animals.
What is artificial selection? Artificial selection is the intentional reproduction of individuals in a population that have desirable traits.
What is breeding? Is the reproduction that is producing of offspring, usually animals or plants.
Dog breeding: Is the practice of mating selected dogs with the intent to maintain or produce specific qualities and characteristics.
Cat breeding: If cat bred early, she will put her energy into feeding the unborn/newborn kittens instead of finishing her growth. She will be 18-24 months old before she is ready for breeding.
What is crossbreeding? Produce (an animal or plant) by mating or hybridizing two different species, breeds, or varieties.
What is selective breeding? Is a process used by humans to develop new organisms with desirable characteristics.
What are traits? A distinguishing quality or characteristic, typically one belonging to a person.
What are alleles? Each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
What is a dominant trait? If one parent contributes a gene for dark hair and the other contributes a gene for light hair, the child will have dark hair.
What is a recessive trait? recessive trait can be carried in a person's genes without appearing in that person.
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