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Name: ____________________
Hr. ______ Date: __________
Definitions:
The passing of traits from parent to offspring. ___inheritance_____
1. A chart that shows all of the possible combinations of alleles that can result
from a genetic cross. _____punnett square____
2. An organism that has 2 identical alleles for a trait. __homozygous___
3. The actual physical appearance of an organism, its visible traits.
____phenotype____
4. An organism's genetic makeup, the combination of alleles that an organism
has. ____genotype_______
5. An allele whose trait always is seen in the organism when the allele is present
in either of the two gene locations. ____dominant______
6. A genotype that has 2 different alleles for a gene. ______heterozygous_____
7. An allele whose trait is covered up whenever the dominant allele is present.
____recessive___
8. The Father of Modern Genetics ____Gregor Mendel______
9. When there are 2 identical alleles for a trait, we call the genotype
______homozygous______
10. __Variation__ in a population allows for the survival of the species.
11. A __gene__ is formed from two alleles on a paired set of chromosomes.
12. _Deforestation_ has caused our planet to reduce the size of forested areas by
½.
13. Erosion causes loss of topsoil due to washing away or wind blowing away.
Sexual vs. Asexual Reproduction
1. Which has 2 parents to create the new organism? ___Sexual___
2. Which only has 1 parent to create the new organism? __Asexual__
3. Genes are carried from parents to their offspring on __chromosomes___.
4. When the offspring is not identical to the parent due to combining different genes,
you have noticed what type of reproduction? __sexual reproduction__
5. Four types of asexual reproduction: ___fission_, ___budding__, __runners___,
__regeneration_.
6. Which of the following is a Feature and which is a Trait? Feet -feature Blonde
hair- trait
Punnett Squares
1. Label the phenotype of Gg if green is dominant __green_
2. Label the phenotype of GG, if Green is dominant _green__
3. Label the phenotype of gg, if green is dominant __not green___
4. Name the genotype for the following combinations of alleles
II _homozygous dominant_, Ii _heterozygous_, ii __homozygous recessive_
5. Draw the punnett square for the pairing of these two parents, if average arches are
dominant Aa x aa
Name: ____________________
Hr. ______ Date: __________
6. Draw the punnett squares for the pairing of these two parents, if tall is dominant
for a birch tree: TT x tt
& LABEL the offspring’s phenotype probability.
T
phenotypes
__4__ : __0_
Tall
short
t
t
T
Tt
Tt
Tt
Tt
SOME MIXED BAG Questions:
Air pollution affects all life on the planet -- true or false?
A solution to reduce air pollution would be to increase the use of fossil fuels in cars -- true or false?
Global Warming affects _all parts of the Earth.
Describe the Archaeopteryx found in China: hollow bones, feathers, sharp claws,
beak and teeth. The hollow bones means that this may have flown as current birds
and the sharp claws move in sweeping motions identical to how a bird moves its
wings through the air.
Why are hollow bones important? They allow the bird to lift off and escape predators
easier. They also allow for the bird to escape natural disasters like a flood or forest
fire.
A human sex cell has 23 chromosomes.
Resource depletion means to _remove and lower the amounts of _ a natural resource.
EROSION: When humans build or remove plants soil will be blown away. How can
we prevent this? We must plant more plants so that the roots will anchor (keep) the
topsoil in place and allow for soil deposition to be correct to allow absorption of
rainfall instead of runoff occurring.