18 Questions
What is the most common chromosomal abnormality found in cattle?
1/29 translocation
Which animal shows abnormalities of chromosome pairing at the pachytene stage of meiotic prophase?
Mule
What is the reduced fertility manifested as in female cattle with centric fusion translocations?
Decrease in services per conception
What is the most common chromosomal anomaly found in pigs?
Centric fusion translocations
Which species commonly suffers from XY sex reversal leading to phenotypic females being genetic males?
Horses
In which species is XXY Klinefelter's syndrome associated with infertility?
Cats
During which stage of development is the embryo most susceptible to teratogenic agents?
Periods of rapid differentiation
Which of the following is NOT among the chemical agents investigated for detrimental effects on the embryo or fetus during pregnancy?
Vitamins
What is a common practice in domestic animal breeding that increases the risk of embryonic and fetal infections with teratogenic agents?
Inbreeding
When do developmental abnormalities in animals due to teratogenic agents occur?
During periods of rapid differentiation
Which etiology of developmental disorders can impact vulnerable periods during fetal development and growth?
Aberrations during any of the mentioned stages
Why is there a growing need to distinguish abnormalities due to teratogens from genetic disorders affecting embryonic development?
To identify genetic-environmental interactions
What is the most severe malformation involving fusion of the eyes in a single orbital cavity with a proboscis above a rudimentary nose called?
Cyclopia
What condition involves fluid accumulation in the fetal brain, abdomen, body cavities, and subcutis?
Dropsy of the fetus
Which term refers to the swelling of soft tissues due to excessive fluid accumulation?
Oedema
Which condition involves excessive fluid in the peritoneal cavity and often accompanies fetuses that have died preterm?
Ascites
What term is used to describe the distension of the abdomen by excessive fetal fluid in cows?
Hydrallantois
In cattle, what is commonly associated with fluid accumulation in the amnion?
Hydramnios
Test your knowledge on common chromosomal abnormalities in cattle, such as centric fusion translocation and Freemartinism. Learn about the structural anomalies where chromosomes fuse near the centromere, causing reduced fertility in cattle.
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