Cystic fibrosis is an autosomal recessive genetic disorder. Which statement BEST explains how cystic fibrosis is maintained in the gene pool? O A. Organisms that are heterozygous can pass on only the dominant allele. O B. Organisms that are homozygous-dominant pass on either dominant or recessive alleles. O C. Organisms that are heterozygous can pass on the recessive alleles because they are carriers of the disorders but do not show characterisitcs of the disorder becuase they have the dominant allele as well. O D. Organisms that are homozygous-recessive pass on only the dominant allele.

Cystic fibrosis is an autosomal recessive genetic disorder. Which statement BEST explains how cystic fibrosis is maintained in the gene pool? O A. Organisms that are heterozygous can pass on only the dominant allele. O B. Organisms that are homozygous-dominant pass on either dominant or recessive alleles. O C. Organisms that are heterozygous can pass on the recessive alleles because they are carriers of the disorders but do not show characterisitcs of the disorder becuase they have the dominant allele as well. O D. Organisms that are homozygous-recessive pass on only the dominant allele.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 9RQ: What is the reason for doing a test cross? a. to identify heterozygous individuals with the dominant...

See similar textbooks

Similar questions

Which phenomenon explains differences in the inheritance patterns of the appearance of a chin beard between males and females of certain species of goats, even when their genotypes are the same? A) sex-limited trait B) sex-influenced trait C) incomplete penetrance D) variable expressivity E) lethal allele
The next pedigree shows how the ABO blood type is being passed on from parents to offspring. Use that pedigree to answer the questions below. How many generations are there? ____________ Can you tell if the trait is dominant or recessive? Why or why not? ________________________________________________________________ Determine the genotypes of all individuals in the pedigree below. Use the following format for the genotypes.
Use the pedigree to answer the question. How is this trait inherited? A. The trait is epistatic. B. The trait is X-linked. C. The trait is dominant. D. The trait is recessive.
Use the pedigree to answer the question. What is Ann’s genotype for this trait? A. She must be AA. B. She must be Aa. C. She can be either aa or AA. D. She can either be AA or Aa.
Which blood allele is recessive? A B AB O
Choose one characteristic and make a pedigree for your family for that characteristic
Organisms heterozygous for a recessive trait are often called carriers of that trait. What does that mean?
A) A woman with type O blood is expecting a child. Her husband is type A and her husband's parents both had type AB blood. What will be their child’s blood type? 2. A)A woman with type O blood is expecting a child. Her husband is type A and her husband's parents both had type AB blood. What will be their child’s blood type? B) A couple has one child with type AB blood. If one parent is heterozygous for blood type A and the other parent is homozygous for their blood type, what are the chances of their future children having: Type A blood? Type B blood? Type AB blood? O blood?
Which term indicates that a single gene has two or more alleles present in a population? A. Point mutation B. Genotype C. Polymorphism D. Pleiotropy
IN TRANSYLVANIA, SOME PEOPLE EXHIBIT TWO UNUSUAL TRAITS IN WHICH THEY HAVE VERY LONG FRONT TEETH AND THE INABILITY TO BE AWAKE WHEN THE SUN IS UP. BOTH OF THESE TRAITS APPEAR TO BE RECESSIVE. IF A WOMAN WHO IS HETEROZYGOUS FOR TEETH AND HOMOZYGOUS NORMAL FOR BEING IN THE SUN MARRIES A MAN WHO HAS BOTH THESE TRAITS, WHAT COULD BE THE PHENOTYPES AND GENOTYPES OF THEIR CHILDREN? USE A PUNNET SQUARE AND SHOW ALL WORK. LIST THE RATIOS FOR THE GENOTYPES AND PHENOTYPES.
In genetics, F stands for filial, which means ________. a. friendly c. final b. offspring d. hairlike
Use the genotype of the two parents in the pedigree to decide if the white lock of hair is dominant or recessive . explain How many males shown in the chart have a white lock of hair ?