Textbook QuestionWhich pattern of inheritance includes examples of codominance?a. Autosomal dominant and recessive traitsb. Multiple-allele traitsc. Sex-linked traitsd. Polygenic inheritance153views
Textbook QuestionDetermine the probability of a couple having a child with a widow's peak if the conditions are as follows: The gene for widow's peak follows strict autosomal dominant-recessive inheritance. Widow's peak (W) is dominant, and no widow's peak (w) is recessive. The genotype of the mother is Ww, and the genotype of the father is ww.137views
Textbook QuestionElise is a freshman college student taking Introduction to Biology. In lab, she is asked her parents' blood types to complete a Punnett square. She knows that she has type A blood and that her mother has type B, but she does not know her father's blood type. Elise's lab partner assures her that she can figure out her father's blood type just by knowing her own and her mother's. Is her lab partner correct? Explain why or why not.143views
Textbook QuestionCertain diseases are transmitted via mitochondrial DNA. Which cell types do you think would be most affected by such diseases, and why?215views
Multiple ChoiceAn allele that is able to mask the expression of its partner allele is said to be __________.727views
Multiple ChoiceAn organism with five pairs of homologous chromosomes could produce __________ different gametes on the basis of independent assortment alone.556views
Multiple ChoiceThe larger the number of offspring, the greater the likelihood that the observed ratios will conform to the values predicted by the Punnett square.522views
Multiple ChoiceMany genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits.600views
Multiple ChoiceIn dominant-recessive inheritance, if an individual is heterozygous, which phenotype will be expressed?780views
Multiple ChoiceThe form of inheritance in which the heterozygous state is expressed as an intermediate is __________.788views
Multiple ChoiceA person who inherits the A and the O blood type alleles will possess which blood type?1168views
Multiple ChoiceWhat is the probability that a child will be born with a recessive trait if both parents are heterozygous for the trait?1188views1rank
Multiple ChoiceIn the human blood type AB, both alleles are expressed and are therefore __________.851views
Multiple ChoiceHeterozygous parents who have had one child with a recessive disease have a __________% chance of having a second child born with the same recessive disease.1715views
Multiple ChoiceUse the following information to solve the problem using a Punnett square: Assume that the dominant B allele encodes brown eyes and the recessive b allele encodes blue eyes. An individual with the genotype bb has children with an individual of the genotype Bb. What is the percent chance that they would have children with blue eyes?786views
Multiple ChoiceWhich of the following disorders is NOT inherited as a simple recessive trait?725views