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Date ___________________
Section 1 2 3 4
(circle one)
Mendel’s Work
1
Key Concepts
Things you need to know...
(you may take bullet notes here)
1) What were the results of Mendel’s experiments, or crosses?
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2) What controls the inheritance of traits in organisms?
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2
Flower Pollination
Steps in pollination:
1) __________________ (male sex cells) is made in the anther.
2) Pollen is then transferred from the _________________ to the “sticky”
stigma on the _________________ part of the flower. The pollen is
carried by insects, like bees, or by wind or rain.
3) Pollen travels down the _______________ (pollen tube) until it reaches the
__________________ (female sex cells) in the ____________________.
4) Pollen joins with ____________________ (eggs), in the ovary. This is
called ______________________________.
5) As time passes, the flower parts fall off, the ovary swells and a _________
develops. The seeds carry the _______________, or baby plants.
3
Mendel’s Work Vocabulary
The following vocabulary words are from your textbook. Please create flashcards, or another study
tool to help you learn them. It will make your study of genetics a lot easier if you understand the
basic vocabulary.
1) heredity – the passing of physical characteristics from parents to
offspring.
2) trait – physical characteristics.
3) genetics – the study of heredity.
4) fertilization – when egg and sperm join or combine. (Share their DNA)
(A fertilized egg is called a zygote.)
5) purebred – offspring of many generations that share the same trait.
6) gene – factors that control a trait. (DNA code or message.)
7) alleles – different forms of genes. Ex. Gene = hair texture, one allele is
curly, the other allele is straight.
8) dominant allele – trait that appears when one is present.
9) recessive allele – trait that is masked or hidden when combined with a
dominant allele. Only shows up when two recessive alleles are
inherited.
10) hybrid – two different alleles for a trait are inherited.
4
Mendel’s Work Bulleted Notes
Read Cells and Heredity, Mendel’s Work, section 3.1 online (pp. 76 - 81) then complete the following
bulleted notes. The red headings have been done for you. Please fill out the blue sub-headings and
bullet notes for each paragraph.
Mendel’s Experiments
(pp. 77 - 78)
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Dominant and Recessive Alleles
(pp. 79 - 81)
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5
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6
Guided Reading and Study Pages
Answer the following questions after reading Cells and Heredity, Mendel’s Work, section 3.1 online
(pp. 76 - 81).
7
8
9
LS36
F36
Genetics of Pea Plants
Genet ics of Pea Plant s
Genet ics of Pea Plant s
Traits
Seed
Shape
Seed
Color
Seed Coat
Color
Pod
Shape
Pod
Color
Flow er
Position
Stem
Height
Round
Yellow
Gray
Smooth
Green
Side
Tall
Wrinkled
Green
White
Pinched
Yellow
End
Short
Controlled
by Dominant
Allele
Controlled
by Recessive
Allele
© PearsonEducation, Inc., publishingasPearsonPrenticeHall. All rightsreserved.
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