58 notecards = 15 pages (4 cards per page)
Which of the following reasons helped make Mendel successful with his genetic experiments?
Which of the following is NOT a trait that is the result of, or is affected by, the interaction of more than one gene?
Which of the following crosses would always result in offspring that only display the dominant phenotype?
Reasons why Mendel was successful
What is the blending theory of inheritance?
Which characteristic of pea plants were important in their selection as Mendel's research organism?
In a classic Mendelian monohybrid cross between a homozygous dominant parent and a homozygous recessive parent, which generation is always completely heterozygous?
If a pea plant shows a recessive phenotype,
Women with X-linked disorders always pass the genes for the disorder to ______, while men with X-linked disorders always pass the genes for the disorder to _______.
Generally, it is not possible to determine whether nondisjunction failed to occur in oogenesis or spermatogenesis. However, it is possible to assert that _________ resulted in nondisjunction in __________.
The F2 offspring of a classic Mendelian monohybrid cross between homozygous dominant and homozygous recessive parents would produce the genotype(s)
The offspring of a monohybrid testcross would have what possible genotype(s)?
What are alleles?
If an individual with a dominant phenotype is crossed with an individual with a recessive phenotype, 4 of their 9 offspring show the recessive phenotype. What is the genotype of the first parent?
Which is NOT true according to Mendel's law of segregation?
Some plants fail to produce chlorophyll, and this trait appears to be recessive. Many plants also self-pollinate. If we locate a pea plant that is heterozygous for this trait, self-pollinate it and harvest seeds, what are the likely phenotypes of these seeds when they germinate?
The most common lethal genetic disease among Caucasians is
The pedigree chart depicts the inheritance pattern of ____. Circles depict females and squares depict males. Colored shapes represent affected individuals (expressing a trait) and uncolored shapes are unaffected (do not express a trait).
If the parents are AO and BO genotypes for the ABO blood group, their children could include which of the following genotypes?
Haiti is settled by peoples of both African and European ancestry. A young couple, both with mixed ancestry, marry and have several children. The children vary widely in the amount of skin melanin production, with one child being lighter than both parents, and one being darker. The simple explanation for this is
Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why?
Unattached earlobes (EE or Ee) are described in the textbook as dominant over attached earlobes (ee). A couple both have unattached earlobes. Both notice that one of their parents on both sides has attached earlobes (ee). Therefore, they correctly assume that they are carriers for attached earlobes (Ee). The couple proceeds to have four children.
In 1940, two researchers named Weiner and Landsteiner discovered that about 85 percent of the human population sampled possessed a blood cell protein that had been previously detected in Rhesus monkeys. This blood type was labeled Rh positive, and Rh+ was found to be dominant over the absence of the blood factor (Rh). Under normal Mendelian inheritance, which of the following statements is FALSE?
Since each child of two heterozygous parents has a 50% chance of receiving a recessive trait from each parent,
The ability to roll the edges of the tongue upward in a U-shape has been considered to be an inherited ability. The standard assumption is that tongue-rolling is a dominant allele at a single gene locus. Which of the following would cast doubt on this assumption?
If the probability of event A is 3/4 and the probability of event B is 1/4, then the probability of both A and B occurring at the same time is
The reason why some individuals who inherit polydactyly (having an extra digit on the hand or feet) but do not express the trait is due to ________.
Computer simulations are sometimes used to demonstrate the outcome of monohybrid fruit fly crosses, where a student can run generation after generation of fruit flies with 100 offspring produced each generation, half male and half female, and a 3-to-1 phenotype ratio (or 75 to 25) in the F1 generation. Compared with real genetics results,
In what kind of classic Mendelian cross would you expect to find a ratio of 9:3:3:1 among the F2 offspring?
Predicting the outcome of a sex-linked trait
In pea plants, the gene for round seed (R) is dominant, and wrinkled seeds (r) are recessive. The endosperm of the pea is also either starchy, a dominant gene (S), or waxy (s). What can be said of a fully heterozygous, dihybrid cross?
A testcross involves an individual exhibiting the dominant phenotype but an unknown genotype being crossed with an individual that has a(n) ___________ genotype.
If individuals exhibiting a dominant phenotype are crossed and produce only offspring with the dominant phenotype, what would be the logical genotype of the parents?
Use of a Punnett square
If a human who is a tongue roller (T) and has unattached ear lobes (E) marries a person who cannot roll their tongue and has attached earlobes, could they produce an offspring that was also a non-tongue roller with attached earlobes? What would be the genotype of the first parent? the second parent?
The particulate theory of inheritance
As many as 60% of people in malaria-infected regions of Africa have the sickle-cell allele, but only about 10% of the U.S. population of African ancestry carries the allele. Malaria remains a major disease in central Africa but has not been a serious problem in the U.S. for many generations. What is/are the reason(s) for the difference in the percentages and what is a reasonable statement about future percentages?
Which is associated with the inability to produce factor VIII in the blood?
When crossing a true-breeding red snapdragon flower with a true-breeding white flower of the same species, we secure all pink offspring. This would seem to support the pre-Mendel view that inheritance is a blending of parental traits. However, Mendel and conventional wisdom agree that "blending" of parental traits is not correct and that particles of inheritance are actually involved because
Cystic fibrosis and Niemann-Pick Disease are common autosomal dominant disorders.
In a case of incomplete dominance, the phenotypic ratio of the F2 generation is the same as the genotypic ratio.
Each gamete carries one factor, now called an allele, for each inherited trait.
If an individual is heterozygous for a particular trait, the gametes that individual produces will contain 3/4 dominant and 1/4 recessive alleles.
Polygenic traits such as height or weight are often influenced by the environment of the organism.
If black fur is produced by a recessive allele, which genotype is most likely to produce a black individual?
If white eyes are produced by a recessive allele, what is the likely genotype of a white-eyed individual?
Which allele combination represents a homozygous dominant individual?
Which allele combination represents a recessive individual?
Which occurrence is when an individual inherits a dominant gene but does not fully express the dominant phenotype?
Which of the following scenarios would not have been used by Mendel during his research?
Which factor led to Mendel's success as a scientist?
Which statement about the blending concept of inheritance is correct?
Which of the following disorders is not a X-linked trait?
During Mendel's pea plants experiment he discovered that the trait for tallness is dominant to that of shortness. Which of the following statements is correct?
When an individual of African descent marries and has children with an individual of European descent their children often have a mid shade of skin color. This can best be described as ___________.
When a round fruit plant is crossed with a long fruit plant their offspring are oval. What is the best explanation for this scenario?
Which of the following is not part of Mendel's law of segregation?