Download Concepts of Inheritance: Classical Genetics Concept 1: Why did

Concepts of Inheritance: Classical Genetics
Concept 1:
Why did Gregor Mendel work with
pea plants?
1.
2.
What is the male part of the flower?
What is the female part of the
flower?
Explain how Mendel
cross-pollinated his pea plants.
Concept 2:
Peas have distinctive __________that
are inherited in _________________
ways. What is a ​
phenotype​
?
Mendel worked with seven traits,
each with two phenotypes. Name
three and indicate their different
phenotypes.
Each trait is controlled by one gene,
but that gene can have different
form. What are these different forms
called?
Alleles are represented by
___________. When paired up they
represent the….
1 Reproduce the drawing on the board
to help you remember.
Concept 3:
Mendel found that when he bred
two purebred plants with different
phenotypes, the offspring did not
exhibit a combination of its parents
genes. Make a drawing to help you
remember.
What did Mendel observe about the
offspring of two different purebred
plants?
Concept 4:
Mendel crossed purebred green with
purebred yellow peas. What were
the results? Make a drawing to show
what happened.
2 Mendel concluded that the yellow
trait was ​
dominant​
to the green
trait. What did he mean by this?
When he took some of the yellow
peas from the resulting first
generation and bred them together,
the green trait reappeared in their
offspring! Draw the results.
The results of these experiments
showed that the pear color is
controlled by ONE ________which
has TWO __________.
Draw the GENOTYPE of a purebred
green pea.
Draw the GENOTYPE of a purebred
yellow pea.
What is homozygous?
What is heterozygous?
Mendel found that the yellow allele,
represented by ______________ in the
genotype, is ​
dominant​
over the
recessive ​
green allele, represented
by ___________ in the genotype. In
your own words explain the
difference between dominant and
recessive.
3 Concept 5:
What was Mr. Hooke’s primary
discovery?
Early observers saw that all living
things contain cells which have a
nucleus. What else did they observe?
Make a drawing.
Why did scientists first hypothesize
that chromosomes were the units of
heredity?
Concept 6:
Illustrate a sister chromatid (these
can be seen in the cell before the
cell divides).
Concept 7:
Logically, if sex cells, like sperm and
egg, have the same number of
chromosomes as regular body cells
then each time they combined...
A cell with two sets of chromosomes
at the beginning of meiosis will
divide twice to give...
4 Illustrate the results of meiosis.
What happens if two sperm cells
fertilize a sea urchin egg?
Concept 8:
The photo below shows all 23 chromosomes carried by humans. As you can
see on the chromosome map on the next page, scientists work very hard to
identify where exactly each gene is located on the chromosome.
5 6