Genetics Quiz
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When parents with different traits are bred, a trait that reappears in the second generation after disappearing in the first generation is a
A. dominant trait
B. true-breeding trait
C. recessive trait
D. characteristic
What is heredity?
A. The process of natural selection
B. The transfer of genetic information from parent to offspring
C. The study of genes and their functions
D. The mutation of genetic material in an organism
An organism that inherits two different alleles from its parents
A. dominant
B. recessive
C. homozygous
D. heterozygous
Which of the following describes the ability of a single gene to have multiple phenotypic effects?
A. incomplete dominance
B. multiple alleles
C. pleiotropy
D. epistasis
In a DNA molecule, nucleotides are linked together to make up a single strand of DNA then bonded to a second strand. This structure is known as a
A. RNA
B. double helix
C. watson-crick
D. double nucleotide
Researchers discovered four mutations in various cells in a patient’s body. Skin cells, egg cells, blood cells, and nerve cells were found mutated. Which one can be passed on to future generations?
A. Skin Cells
B. Egg Cells
C. Blood Cells
D. Nerve Cells
What scientist is known for inventing Punnett Squares to predict probability of traits?
A. Francis Crick
B. Gregor Mendel
C. Rosalind Franklin
D. James Watson
Hutchinson-Gilford progeria is an exceedingly rare human genetic disorder in which there is very early senility and death, usually from coronary artery disease, at an average age of approximately 13. Patients, who look very old even as children, do not live to reproduce. Which of the following represents the most likely assumption?
A. All cases must occur in relatives; therefore, there must be only one mutant allele.
B. Successive generations of a family will continue to have more and more cases over time.
C. The disorder may be due to mutation in a single protein-coding gene.
D. Each patient will have had at least one affected family member in a previous generation.
What percent of your DNA do you get from your mom?
A. 25%
B. 50%
C. depends on how much you look like her
D. 75%
Where is DNA located in a cell?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Endoplasmic Reticulum
Organisms that have inherited two different forms of the same trait, one from each parent
A. purebred
B. hybrid
C. dominant trait
D. recessive trait
An organism that inherits two of the same alleles from its parents
A. dominant
B. phenotype
C. heterozygous
D. homozygous
What phenotype will be expressed if an individual has one dominant allele (B) and one recessive allele (b) for hair color?
A. Orange hair
B. No hair
C. Black hair
D. Blonde hair
Which is an example of an inherited trait in humans?
A. Having short hair
B. Having blue eyes
C. Speaking English
D. Being polite
What is Heterozygous?
A. A cure for a disease
B. A genetic malfunction
C. 1+1=None of the above
D. having dissimilar pairs of genes for any hereditary characteristic