Exam 11: Mendelian Patterns of Inheritance

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 _______.

In what kind of classic Mendelian cross would you expect to find a ratio of 9:3:3:1 among the F₂ offspring?

In a case of incomplete dominance,the phenotypic ratio of the F₂ generation is the same as the genotypic ratio.

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 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 ________.

Which of the following reasons helped make Mendel successful with his genetic experiments?

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

In a classic Mendelian monohybrid cross between a homozygous dominant parent and a homozygous recessive parent,which generation is always completely heterozygous?

What are alleles?

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).

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?

If white eyes are produced by a recessive allele,what is the likely genotype of a white individual?

Which factor led to Mendel's success as a scientist?

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 __________.

In the use of a Punnett square for genetic results of crossing individuals

The most common lethal genetic disease among Caucasians is

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?

Which occurrence is when an individual inherits a dominant gene but does not fully express the dominant phenotype?

Which allele combination represents a recessive individual?