Genetics & Selective Breeding Review

What are some of the traits that American farmers select FOR in extra-muscled cattle?

• better hooves

• longer lives

• correct structure of rump, feet & legs

• needing to give birth by C-section

• good disposition (personality)

Extra-muscled cows commonly have to be born by C-section.

• TRUE

• FALSE

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Which statement below is NOT TRUE about the meat of heavily muscled cattle?

• It is high in cholesterol.

• It is low in cholesterol.

• It is comparable in health to chicken breast.

• It is fewer calories than other beef.

Why is raising Extra-Muscled Cattle better for the farmer?

• 20% more meat is produced per cow

• It is more desirable to the consumer because it is healthier meat.

• These cows are easier to raise.

• You can increase how much meat is produced with the same or fewer # of cows.

Most extra muscled cows are created through ARTIFICIAL INSEMINATION.

• TRUE

• FALSE

The purpose of selective breeding is to 

• Get bigger animals
• get smaller animals
• create animals with desirable traits
• create animals with bad traits

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What is one of the processes involved in selective breeding?

• allowing organisms to reproduce without interference

• choosing individuals with desirable characteristics to be parents of the next generation

Problems with selective breeding include

• Better animals
• More Meat
• Animals can have bad health problems
• more diversity

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A specific characteristic that varies from one individual to another is?

• an allele

• a gene

• a trait

• a chromosome

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A bison has teeth that are adapted for grazing or eating grasses. Suppose a disease were to kill off all the grasses in a region where the bison live. What would likely happen to the bison?

• They would adapt to eating a different kind of plant.

• They would evolve into a new species

• They would eventually die from lack of food

• They would not be affected.

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