The shape of a heliodor is an X-linked trait. Male heliodors inherit two X chromosomes, while the females inherit an X and a Y chromosome. The recessive allele codes for the common bell-shape  while the dominant phenotype is a round shape . Hudson is a round male and has offspring with Heidi, a bell-shaped female. They already have one daughter, Hannah, who is shaped like her mother. The reason for your answer above is:   a.Females heliodors inherit two X chromosomes, so it is less likely they would only inherit two recessive alleles for being bell-shaped.   b.Males heliodors inherit two X chromosomes, so it is less likely they would only inherit two recessive alleles for being bell-shaped.   c.Males only need to inherit one recessive allele to be bell-shaped.   d.Being male or female has no impact on the shape of a heliodor

Q: X-linked ichthyosis is an X-linked recessive trait that manifests in part as dry, scaly skin…

A: If one allele is missing it is hemizygous. Heterozygous is the presence of two different alleles at…

Q: This is a modified question from the textbook, Campbell Biology in Focus (3rd edition), question #5…

A: Colour blindness is an x linked recessive disease in which the person affected is unable to…

Q: A type of baldness is sex –limited such that the allele that causes it is dominant in men and…

A: Inheritance of baldness Baldness is a sex influenced character and is Autosomal.  Autosomal genes…

Q: Two different autosomal loci (t1 and t2) can render a mouse tailless. The tailless alleles at both…

A: Answer- 9:7

Q: A homozygous recessive allele, aa, is responsible for albinism. Humans can exhibit this phenotype.…

A: Albinism is passed on in an autosomal recessive inheritance pattern. This means a child has to get 2…

Q: What is the probability that they will have 3 normal girls?

A: Autosomal recessiveness is a condition when two recessive genes are expressed in an individual to…

Q: Red-green colorblindness is a X-linked recessive disorder. Jill has normal vision but her dad was…

A: Red-green colour-blindness is X-linked recessive genetic disorder. The colour-blind gene is denoted…

Q: Adenike and her partner, Debare, are expecting their first child. Adenike is healthy as are her two…

A: Introduction :- Marfan syndrome is a genetic disorder that affects the connective tissue in the…

Q: The image shows a pair of homologous chromosomes from a single parent before gamete production. M1…

A: Genetic linkage is a study which shows us the  genes or alleles which are close to each other on a…

Q: Jill has a son named Jack. She claims that James is the father. James denies this. Jill has Type A…

A: The ABO blood grouping system is an example of co-dominance and also multiple alleles. Total 3…

Q: The pedigree chart provided below traces the occurrence of a disease through the generations of a…

A: Homozygous dominant is represented by both capital letter such as TT for tall.   Heterozygous…

Q: What is the approximate percentage chance that individual V.2, shown in the pedigree diagram below…

A: Pedigree charts are family trees that show the members of a family who have been affected by genetic…

Q: A breeder is interested in a new coat colour in mice. This trait is controlled by a single autosomal…

A: A test cross is a type of back cross in which an individual with an unknown genotype showing a…

Q: A woman with normal blood clotting mates with a man who has hemophilia. Their first child is a boy…

A: A nurse's knowledge of pathophysiology and causal factors of an illness is crucial. Only the…

Q: One type of colorblindness is an X-linked recessive trait. If a colorblind man and a woman with…

A: Colour blindness is an X-linked recessive disorder and the females are always a carrier of it the…

Q: Adenike and her partner, Debare, are expecting their first child. Adenike is healthy as are her two…

A: PKU (Phenylketonuria) is an inherited metabolic disorder that affects the way the body processes the…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.