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Transcript
Mendel's Pea experiments
Why did Mendel choose pea plants? Pea plants grow and reproduce quickly. They have
a wide variety of different ____________, and were easy to breed and cross-pollinate. What
are the 7 genetic traits Mendel looked at? (pg. 157)
_________________________________________________________________________
_________________________________________________________________________
What did Mendel do? First, he transferred ________ from flowers on short-stemmed plants
to the _________ of flowers on other short-stemmed plants and found out that all the
offspring were short-stemmed. Mendel called these plants ___________ plants, plants that
always produce offspring with the ___________ traits as their parents. When he crossed
tall-stemmed plants with other tall-stemmed plants, he found that both tall and short plants
resulted.
What were Mendel's conclusions? Mendel realized that each plant must contain _______
factors for a particular trait. He called these factors genes. Alternative forms of a gene (tall
and short) are now called alleles. When he crossed two true-breeding plants with opposite
traits (for example tall with short), the offspring showed only one of the traits, which Mendel
called the ________ trait. He called the “weaker” trait which did not appear in those
offspring ________.
How are the genes inherited? Mendel realized that each parent could only contribute
_______ of the factors (genes) to the plant in the offspring generation, so the offspring in the
first filial generation would get one factor from the female parent and one from the male
parent.
Mendel Rap
There was an Austrian Monk called Gregor.
He looked at something never done before.
I say Gregor Mendel was his name.
He wondered why sometimes we look the same.
Using peas he looked at their height.
He worked all day and all night.
The first he crossed was a tall and a dwarf one.
Their offspring were all tall F1
He was at no loss
He went for a second cross
He did it, two of these tall
What did he see?
I said, what did he see?
F2 – 1 dwarf and tall ones there were 3
Now what was his conclusion?
To him there was no confusion.
Features came in hereditary units.
This was his message.
One was dominant, and the other recessive.
His work turned out to be quite prophetic.
This was the start of modern genetics.
Word to the Brother,
Peas.
Mendel's Pea experiments
Why did Mendel choose pea plants? Pea plants grow and reproduce quickly. They have
a wide variety of different ____________, and were easy to breed and cross-pollinate. What
are the 7 genetic traits Mendel looked at? (pg. 157)
_________________________________________________________________________
_________________________________________________________________________
What did Mendel do? First, he transferred ________ from flowers on short-stemmed plants
to the _________ of flowers on other short-stemmed plants and found out that all the
offspring were short-stemmed. Mendel called these plants ___________ plants, plants that
always produce offspring with the ___________ traits as their parents. When he crossed
tall-stemmed plants with other tall-stemmed plants, he found that both tall and short plants
resulted.
What were Mendel's conclusions? Mendel realized that each plant must contain _______
factors for a particular trait. He called these factors genes. Alternative forms of a gene (tall
and short) are now called alleles. When he crossed two true-breeding plants with opposite
traits (for example tall with short), the offspring showed only one of the traits, which Mendel
called the ________ trait. He called the “weaker” trait which did not appear in those
offspring ________.
How are the genes inherited? Mendel realized that each parent could only contribute
_______ of the factors (genes) to the plant in the offspring generation, so the offspring in the
first filial generation would get one factor from the female parent and one from the male
parent.
Mendel Rap
There was an Austrian Monk called Gregor.
He looked at something never done before.
I say Gregor Mendel was his name.
He wondered why sometimes we look the same.
Using peas he looked at their height.
He worked all day and all night.
The first he crossed was a tall and a dwarf one.
Their offspring were all tall F1
He was at no loss
He went for a second cross
He did it, two of these tall
What did he see?
I said, what did he see?
F2 – 1 dwarf and tall ones there were 3
Now what was his conclusion?
To him there was no confusion.
Features came in hereditary units.
This was his message.
One was dominant, and the other recessive.
His work turned out to be quite prophetic.
This was the start of modern genetics.
Word to the Brother,
Peas.