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Mendelian Genetics (Grade 8)

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Mendelian Genetics

The first recorded scientific study of genetics was done by
  1. Dmitri Mendeleev.
  2. Carl Linnaeus.
  3. Gregor Mendel.
  4. Charles Darwin.
Punnett squares show the possible                       of offspring.
  1. genotypes
  2. number of chromosomes
  3. DNA sequence
  4. letters of a sequence
The phenotype displays                 characteristics.
  1. chemical
  2. dominant
  3. recessive
  4. physical
When a dominant allele is present, the offspring will show                 characteristics.
  1. recessive
  2. dominant
  3. homozygous
  4. heterozygous
Mendel's research generated the terms "recessive traits" and "dominant traits" in genetics studies.
  1. True
  2. False
                is an organism's genetic makeup.
  1. Phenotype
  2. Genetics
  3. Genotype
  4. Gene
                is the result of the combination of genetic makeup and environmental effects.
  1. Phenotype
  2. Genotype
  3. Genetics
  4. Heredity
A dominant gene usually shows itself over a
  1. homozygous gene.
  2. heterozygous gene.
  3. recessive gene.
  4. sex-linked trait.
A trait is determined by more than two alleles when                       occurs.
  1. DNA sequencing
  2. a single phenotype
  3. hereditary sequencing
  4. polygenic inheritance
The actual transmission of the physical qualities we receive from our parents and pass on to our offspring, and the law by which living beings tend to repeat characteristics from one generation to the next is called
  1. physiology.
  2. breeding.
  3. inheritance.
  4. heredity.
In incomplete dominance, one trait will be expressed.
  1. True
  2. False
If the two alleles for one trait are the same (pp or PP), the person is                 for that trait.
  1. homozygous
  2. heterozygous
  3. oozygous
  4. nonfertile
The difference between the law of segregation and the law of independent assortment is
  1. there is no difference.
  2. independent assortment has genes that clump together and split into the same cell.
  3. segregation has genes that clump together and split into the same cell.
  4. segregation has genes that go into separate cells separate of one another.
A brown-eyed heterozygous (Ee) parent is crossed with a brown-eyed homozygous dominant (EE) parent. Brown eyes are dominant, and blue eyes are recessive. What are the expected offspring percentages for eye color?
  1. 100% brown eyes
  2. 50% brown eyes, 50% blue eyes
  3. 100% blue eyes
  4. 75% blue eyes, 25% brown eyes
The genotypes expressed in percentages of the offspring from a cross between a homozygous dominant (WW) parent for white hair with a homozygous recessive (ww) parent for yellow hair would be
  1. 75% white hair, 25% yellow hair.
  2. 100% white hair.
  3. 100% yellow hair.
  4. 75% yellow hair, 25% yellow hair.
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