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When Mendel returned to Brunn he taught high school and tended a ______ plot at the monastery.
garden
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Mendel observed __(#) characteristics of pea plants, each occuring in two contrasting traits.
7
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Mendel controlled how the pea plants were _________.
pollinated
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Pollination occurs when pollen grains produced in the male reproductive organs, or _______, are transferred to the female reproductive organ called a ______.
anthers, stigma
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____-pollination occurs when pollen is transferred from the ______ of a flowere to the _____ of either the same flower or a flower from the smae plant.
self, anthers, stigma
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_____-pollination involves ___________ from the flowers of seperate plants.
cross, fertilization
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Pea plants usually reproduce by ____-pollination.
self
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Plants that are _____ for a trait always produce offsping with that same trait.
pure
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The term ______ denotes plants that are pure for a specific trait.
strain
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Mendel produced __(#) strains of pea plants each representing a pure trait
14
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The first generation or _______ generation is abbreviated ___.
parental, P2
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Cross pollination of two contrasting strains was used to produce the next generation. These offspring are called the first ______, or ___ generation
filial, F1
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Allowing the F1 generation to self-pollinate produced the next generation of offspring, which are called the second _____ or ___ generation
filial, F2
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When Mendel crossed a plant pure for green pods with one pure for yellow pods all of the offspring has ____ pods.
green
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When the F1 green pod plants were ____-pollinated the resulting f2 plants were about 3/4 green pods and about 1/4 yellow pods.
self
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Mendel concluded that there must be something in the plant that controlled the expression of a trait, he called these ________.
factors
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In every cross there seemed to be a ________ factor which was expressed and a recessive factor which disappeared in the F1 but reapperated in the F2 generation.
dominant
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Mendel concluded that factors seperate during the formation of _______(reproductive cells), and that each parent may only contribute one factor for each trait to offspring.
gametes
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What principle is this: A trait controlled by a recessive factor had no observable effect on an organism's appearence when it was paired with a trait controlled by a dominant factor.
The Principle of Dominance
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What principle is this: A pair of factors is segregated, or seperated during the formation of gametes
The Principle of Segregation
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What principle is this: Factors for different characteristics are distributed to gametes independently.
The Principle of Independent Assortment
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Most of Mendel's findings agree with what biologists now know about molecular ________. Molecualr genentic is the study of the structure and function of __________ and ______.
genetics, chromosomes, genes
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What Mendel called factors, we call _______
alleles
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______ ________ are used to represent alleles. Upper case letters are used to represent ________ alleles and lowere case letters are used to represent ________ alleles.
Letter symbols, dominant, recessive
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What are different forms that are possible for a specific trait called?
Allele
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