Unit 5 – Sexual Reproduction and Genetics MEIOSIS Meiosis creates ____ daughter cells, which are _____________________ to the parent cell and from each other. Meiosis creates _______________ _________ (N) from _________________ ________ (2N) Meiosis occurs in two phases, Meiosis I and Meiosis II Prophase I Metaphase I Anaphase I Telophase I
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Unit 5 – Sexual Reproduction and Genetics
Crossing Over
Occurs:
Result:
MEIOSISMeiosis creates ____ daughter cells, which are _____________________ to the parent cell
and from each other.
Meiosis creates _______________ _________ (N) from _________________ ________ (2N)
Meiosis occurs in two phases, Meiosis I and Meiosis II
Prophase I
Metaphase I
Anaphase I
Telophase I
**Meiosis II phases are the same as the phases of mitosis only with half of the chromosomes
PHASE MITOSIS MEIOSIS I MEIOSIS II
PROPHASE
METAPHASE
ANAPHASE
TELOPHASE
Mendelian GeneticsTraits follow Mendel’s laws of inheritance.
How did he discover these?
1.Law of Segregation
2. Law of Dominance
3. Law of Independent Assortment
X
X
XX
Genetics___________________ control specific traits or characteristics. They are made up of _________________
Why does every person have two copies of each gene?
Different types of the same genes are called ______________________
Punnett Squares are used to show
Aa x Aa
What proportion would be expected to be AA ______ out of _______ or ______%
What proportion would be expected to be Aa ______ out of _______ or ______%
What proportion would be expected to be Aa ______ out of _______ or ______%
Heterozygous Homozygous
DominantAllele
RecessiveAllele
What proportion would be expected to have normal pigmentation ______ out of _______ or ______%
What proportion would be expected to have albinism ______ out of _______ or ______%
Genotype Phenotype
Non-Mendelian GeneticsNot all traits follow Mendel’s laws of inheritance.
Incomplete Dominance:
Codominance:
Multiple Alleles:
Blood Type Can Give To: Can Get From:
AB
ABO
Sex-Linked Traits:
GENOTYPE BLOOD TYPE
Multiplication Rule of Probability:
What is the chance of rolling a 5 three times in a row on a die?
If a person is who is heterozygous for tongue curling (T) and is homozygous for free earlobes (E) marries a woman who cannot curl her tongue and has attached earlobes. What are the chances that their kids will not be able to curl tongue and have free earlobes?
Sex-Linked Traits:
Polygenic Traits:
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