Exam 3: Basic Principles of Heredity

Two gene loci, A and B, assort independently, and alleles A and B are dominant over alleles a and b.What is the probability of producing an AB gamete from an AABb individual?

In pedigree analysis, the proband is:

Compare and contrast Mendel's principle of segregation and the principle of independent assortment.

Genes come in different versions called:

Gregor Mendel carried out a cross between two pea plants by taking pollen from a plant that was homozygous for round seeds and dusting the pollen onto the stigma of a plant homozygous for wrinkled seeds.Which of the following would be the reciprocal cross that Mendel had carried out for this experiment?

Which term refers to mating between closely related people?

Could the characteristic followed in the pedigree be caused by an autosomal dominant disease? Why or why not?

How did Sutton's chromosome theory of inheritance link Mendel's work with a more mechanistic understanding of heredity?

In Mendel's peas, purple flower color is dominant to white.From which of the following descriptions can you NOT infer the genotype at this locus completely?

If the pedigree is for an autosomal recessive characteristic, which individuals are definitely heterozygous?

Round seeds (R)is dominant to wrinkled seeds (r), and yellow seeds (Y)is dominant to green seeds (y).A plant of unknown genotype is testcrossed to a true-breeding plant with wrinkled and green seeds.The offspring produced were 53 round and yellow, 49 round and green, 44 wrinkled and yellow, 51 wrinkled and green.What is the likely genotype of the parent in question?

Use the following information to answer Questions 44 and 45.A space capsule crashes to Earth with an alien life-form aboard.Two creatures emerge from the capsule, one with green skin and one with yellow skin.The yellow creature soon gives birth to offspring fathered by the green creature, producing 12 green and 8 yellow offspring.Green skin in these diploid creatures is dominant to yellow skin.You are curious to find out if the number of offspring is significantly different from expected Mendelian ratios, so you perform a chi-square test.What is the chi-square value for this cross?

In pedigree analysis, consanguinity refers to:

The ability to roll the tongue is caused by a dominant allele.A woman is a "roller, " but one of her parents is not.What is the woman's genotype?

Which of the following statements is TRUE?

Why was the pea plant an ideal plant for Mendel to use?

The ability to curl one's tongue into a U-shape is a genetic trait.Curlers always have at least one curler parent but noncurlers can have one or both parents who are curlers.Using C and c to symbolize the alleles that control this trait, what is the genotype of a noncurler?

Which of the following statements is TRUE?

What conclusions did Mendel make from his monohybrid crosses?

In dogs, black coat color (B)is dominant over brown (b), and solid coat color (S)is dominant over white spotted coat (s).A cross between a black, solid female and a black, solid male produces puppies with only black, solid coats.This same female was then mated with a brown, spotted male.Half of the offspring from this cross were black and solid, and half of the offspring were black and spotted.What is the genotype of the brown, spotted male?