Return to Lesson Common Diseases of Livestock Animals: Genetic Diseases

Which DNA bases pair with each other?

A and T; C and G

One of two or more versions of a gene at a location

Allele

__________ store DNA and are formed when DNA tightly wraps around a protein.

Chromosomes

Which common genetic disease only affects males?

Cryptorchidism

carrier of genetic information

DNA

Deoxyribose Nucleic Acid, or __________ is made of four chemical bases, in which, A pairs with __________ and C pairs with __________.

DNA; T; G

A gene is a complete set of all genetic material present in a cell or organism.

False

Which of the following is NOT a method for managing genetic disorders in livestock animals?

Following established biosecurity guidelines

basic physical and functional unit of heredity

Gene

Genetic disorders can be managed in livestock herds with which of the following methods?

Genetic testing and selective breeding

genetic material of an organism

Genotype

Which common genetic disease occurs as a result of an elevated level of potassium in the blood?

Hyperkalemic periodic paralysis

A cattle rancher in Texas noticed his cattle losing hair as the weather consistently got warmer. However, one calf has significantly less hair than the rest of the herd. The rancher is worried about the calf being more susceptible to infections, pests and sunburns as summer nears. A veterinarian could diagnose the calf with which of the following?

Hypotrichosis

Which of the following genetic disorders is a result of mutations in multiple genes, lifestyle and environment?

Multifactorial disorder

physical characteristics of an organism

Phenotype

__________ refers to the physical characteristic of an organism, while __________ refers to the genetic material of an organism.

Phenotype; genotype

During an episode of which disease should dantrolene sodium be administered?

Porcine stress syndrome

Justin raises and shows pigs. He takes careful consideration when breeding boars and sows to produce structurally sound, heavily muscled pigs. As his operation grows, he has considered investing in genetic testing. His hogs are at the highest risk for which of the following genetic diseases?

Porcine stress syndrome

Which of the following common genetic diseases has a significant negative impact on the quality of the meat of the affected animal?

Porcine stress syndrome

Hyperkalemic periodic paralysis causes hyperkalemia, an elevated level of __________ in the blood.

Potassium

Which of the following prevention techniques is most effective for animals diagnosed with hypotrichosis?

Refrain from breeding known carriers

Alexis is administering a vaccine intravenously, which means __________.

She is injecting into the vein

A sheep farmer is working in the lambing barn, where numerous lambs are being born each day. One lamb in particular is a week old and has a long neck and legs. If these symptoms worsen, a veterinarian could diagnose the lamb with which disease?

Spider lamb syndrome

Which disease is a skeletal phenotypical disorder causing abnormal bone and cartilage growth and is compared to dwarfism in cattle?

Spider lamb syndrome

Which common genetic disease is also known as mule foot?

Syndactyly

How would a homozygous dominant animal be represented on a Punnett Square?

TT

Hypotrichosis is often a congenital disease, meaning __________.

The disease is present at birth

What is the proper treatment technique for an animal diagnosed with syndactyly?

There is no treatment available

Chromosomes vary in diploid number depending on the species.

True

DNA chemical bases, a sugar molecule and a phosphate molecule result in a nucleotide.

True

A bull has been diagnosed with cryptorchidism, as one testicle has not descended. How can this diagnosis further be accurately described?

Unilateral cryptorchid