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Mendelian Genetics (Grade 10)

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Mendelian Genetics

The units of heredity that determines which traits, or characteristics, that children inherit from their parents are
  1. muscles.
  2. genes.
  3. birth.
  4. zygote.
In your own words, explain Mendel's Law of Segregation.

Suppose you are heterozygous man (Bb) for brown hair, your wife is homozygous for blond hair (bb), and your neighbor is homozygous for brown hair (BB).
Your baby's phenotype shows blond hair. Using your knowledge of heredity, can your baby be the neighbor's kid? Explain.
Table 2x2

What are alternative forms of genes also known as?
  1. alleles
  2. genotypes
  3. phenotypes
  4. inherited patterns
  5. traits
Mendel's law of dominance states that
  1. an organism will always be stronger than its parents.
  2. only the alleles from the male parent will appear in the phenotype of the offspring.
  3. traits will disappear from phenotypes during the dominant generation and reappear during the recessive generation.
  4. if an organism inherits two different alleles, only the dominant one will show up in its phenotype.
What is the difference between a genotype and phenotype?

When Mendel crossed pea plants, he termed the first generation of offspring as the first                    from the Latin meaning "son."
What is the term for the breeding of parents when only one trait is being investigated?
  1. law of segregation
  2. monohybrid cross
  3. dihybrid cross
  4. Punnett square
An individual who has two exact copies of an allele is called heterozygous.
  1. True
  2. False
When considering different genotypes, what are the three conditions that can exist due to Mendel's Law of Segregation?

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