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Copy of CK12 3.1 Mendelian Genetics (2/1/2024)
By Elizabeth Stevens
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Who is the scientist that studied the heredity by using pea plants?
Isaac Newton
Charles Darwin
Gregor Mendel
Louis Pasteur
What biological concept did Mendel's experiments with pea plants help uncover?
Metabolism
Heredity
Cell division
Photosynthesis
Why are Mendel's hereditary findings relevant to humans?
They explain human anatomy
They apply to all sexually reproducing living things
They are exclusive to humans
They explain human evolution
What attribute made Mendel's work particularly significant?
Curiosity, scientific methods, and good luck
His wealthy background
Sophisticated laboratory equipment
Opportune timing
What is the science of heredity referred to as?
Geology
Genetics
Chemistry
Biology
Why did offspring resemble their parents in Mendel's experiments?
It was a coincidence
They had similar environments
It was due to nurture not nature
Characteristics are inherited
In which country was Gregor Mendel born?
Austria
Germany
France
Switzerland
Which plant is Gregor Mendel best known for experimenting with?
Corn plant
Rose plant
Sunflower plant
Pea plant
What was the blending theory of inheritance popular in Mendel's time?
Offspring inherit the least dominant traits
Offspring characteristics are unrelated to parent's
Characteristics of only one parent are inherited
Offspring are a mix of the parent's characteristics
Why did Mendel question the blending theory of inheritance?
He noticed plants that weren't a blend of the parents
He believed the theory was widely accepted
He thought the theory was too complex
Plants in his garden contradicted Darwin’s theory of evolution
Approximately how many pea plants did Mendel experiment with?
Approximately 300
About 3 million
Around 3,000
Almost 30,000
Why did Mendel choose pea plants for his genetics experiments?
They were easy to find in his location.
Pea plants were his favourite.
They were the only plants available.
Fast-growing, easy to raise, with multiple visible characteristics.
What visible characteristics vary in pea plants?
Only stem length.
Seed form/color, flower color, pod form/color, placement, stem length.
Only pod form and color.
Only seed form and color.
How many common values does each characteristic have in pea plants?
Four
Two
One
Three
What may the flower color of a pea plant be?
Orange or brown
Blue or green
Red or yellow
White or purple (violet)
What do cotyledons refer to in gregor Mendel's experiments?
Seed shells
The tiny leaves inside seeds
Roots of the plants
Pods of the plants
Where are axial pods located on pea plants?
At the ends of the stems
Inside the seeds
Along the stems
At the top of the plant
Where are terminal pods located on pea plants?
Along the stems
Inside the seeds
At the ends of the stems
At the base of the plant
What part of the flower produces the male gametes of plants?
Ovary
Anther
Stigma
Petal
What is the correct term for the fertilization step in the plant's sexual reproduction?
Conjugation
Germination
Replication
Pollination
What is the role of the stigma in a flower?
It passes pollen grains to female gametes in the ovary
It protects the ovary
It produces pollen grains
It transfers pollen to the anther
What is the term for the process where pollen is transferred from the anther to the stigma?
Fertilization
Germination
Pollination
Translation
What are the reproductive organs of plants?
Flowers
Roots
Leaves
Stem
Which part of the flower receives the pollen grains?
Anther
Stigma
Pistil
Ovary
What does the anther produce?
Seeds
Female gametes
Male gametes (pollen)
Fruits
Which structure guides the pollen grains to the female gametes?
Stamen
Petals
Pistil
Sepals
What is the process of transferring pollen from one plant to the same plant called?
Self-pollination
Germination
Cross-pollination
Hybridization
What did Mendel do to prevent self-pollination?
Increased sunlight
Supplied extra water
Applied insecticide
Removed the anthers
What process involves pollen from one plant fertilizing another plant of the same species?
Hybridization
Self-fertilization
Transplantation
Cross-pollination
What is the term for the offspring that result from cross-pollination?
Mono-hybrids
Hybrids
Off-shoots
Sprouts