Table of Contents
- 1 Which condition is inherited as a dominant allele?
- 2 What 2 terms best describe the inheritance of human blood types?
- 3 Which of the following is an example of a recessive genotype?
- 4 What is a person who has a disorder caused by a recessive allele?
- 5 How is a recessive genetic disease inherited?
- 6 What are the heterozygous genotypes?
Which condition is inherited as a dominant allele?
Huntington’s disease is a common example of an autosomal dominant genetic disorder.
What 2 terms best describe the inheritance of human blood types?
Therefore, the correct answer is letter (B) codominance and multiple alleles.
Which of the following is an example of a recessive genotype?
Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait. One example of a recessive inherited trait is a smooth chin, as opposed to a dominant cleft chin.
What is the genotype of a person with an autosomal recessive trait?
When completing this pedigree with autosomal recessive inheritance, individuals that are shaded are expressing the recessive phenotype and have a genotype of “rr”. Use this knowledge and additional knowledge about how genes are passed from generation to generation to complete the remainder of the pedigree.
What is a dominant recessive pattern?
In other words, for any given gene, parents are equally likely to pass down either one of their alleles to their offspring in a haploid gamete, and the result will be expressed in a dominant–recessive pattern if both parents are heterozygous for the trait.
What is a person who has a disorder caused by a recessive allele?
Examples of autosomal recessive disorders include cystic fibrosis, sickle cell anemia, and Tay-Sachs disease.
How is a recessive genetic disease inherited?
To have an autosomal recessive disorder, you inherit two mutated genes, one from each parent. These disorders are usually passed on by two carriers. Their health is rarely affected, but they have one mutated gene (recessive gene) and one normal gene (dominant gene) for the condition.
What are the heterozygous genotypes?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
What type of inheritance is blood type in humans?
The ABO blood type is inherited in an autosomal codominant fashion. The A and B alleles are codominant, and the O allele is recessive.
What is heterozygous recessive?
An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele. Heterozygous means that an organism has two different alleles of a gene.