Term
| I go to buy a bull at a sale in March. The best looking, highest gaining bull there has a birth weight of 105 lbs. I decide not to buy him, because I think 105 lbs is too high. This is an example of? |
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Definition
| ICL (Independent Culling Level) |
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Term
| The idea or concept that some animals produce more progeny than others is termed? |
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Definition
| Differential reproduction |
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Term
| What species are not usually crossbred? |
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Definition
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Term
| In nerve cells the projections that conduct reception to the cell body are called? |
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Definition
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Term
| What affects animal product consumption? |
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Definition
| Income, Religion, Family tradition, and Consumer confidence |
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Term
| The federal act that made education more available to a larger, less wealthy populations by establishing land grant colleges is? |
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Definition
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Term
| The thyroid gland would be located where? |
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Definition
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Term
| Assuming black (B) is dominant to red (b) and we mate a black bull to a red cow, we would expect what kind of progeny? |
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Definition
| At least 50% red, but 100% is he is homozygous black |
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Term
| What are the potential genotypes of a black bull? (hint: black [B] and red [b]) |
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Definition
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Term
| The nervous system that controls voluntary muscles actions is? |
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Definition
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Term
| In domestic animals, breeding is controlled by man more than in wild species |
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Definition
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Term
| In theory, the young females in the herd should be genetically superior to their mothers |
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Definition
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Term
| In most mating systems we make greater progress through selection of males than through female selection |
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Definition
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Term
| Single trait selection is very common and highly recommended to improve livestock |
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Definition
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Term
| An animals' phenotype is totally controlled by its genotype |
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Definition
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Term
| Mitosis results in a decrease in chromosome number in the cell |
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Definition
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Term
| In mammals the female is the heterogametic sex |
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Definition
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Term
| The polled trait is undesirable in cattle |
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Definition
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Term
| In order for recessive traits to be expressed they must be in the homozygous state |
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Definition
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Term
| A mare's (female horse) grandmother could be termed its paternal grandsire |
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Definition
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Term
| Inbreeding increses heterozygousity of an animal's gene pairs |
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Definition
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Term
| Domestication of animals allowed man to live in a broader range of climates |
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Definition
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Term
| Using an index of net merit is an example of single trait selection |
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Definition
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Term
| In the feedlot phase of livestock production animals are fed below maintenance levels |
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Definition
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Term
| In commercial operations, crossbreeding is more common than inbreeding |
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Definition
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Term
| In incomplete dominance, the heterozygote has its own unique phenotype |
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Definition
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Term
| Qualitative traits are usually controlled by more gene pairs than quantitative traits |
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Definition
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Term
| Mutations are usually undesirable and rarely occur |
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Definition
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Term
| Chromosome number varies by specie |
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Definition
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Term
| A long generation interval results in greater genetic improvement than a short generational interval |
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Definition
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Term
| The cow was likely the first domesticated animal |
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Definition
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Term
| Most herbivores are predator animals |
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Definition
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Term
| Today's famer feeds fewer non-farm people than they did in 1950 |
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Definition
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Term
| Beef consumption tends to be higher in the central U.S. than on either coast |
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Definition
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Term
| There is less land available for food production in the U.S. today then 50 years ago |
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Definition
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Term
| Lowly heritable traits are greatly influenced by the environment |
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Definition
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Term
| Sperm and egg cells would be considered to be haploid or half the chromosomes of non-sex cells |
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Definition
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Term
| The hormones produced by endocrine glands are delivered to target tissues via the bloodstream |
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Definition
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Term
| Only a small amount of a hormone is needed to cause a response |
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Definition
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Term
| Hormones produced by the gonads have a major effect on growth |
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Definition
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Term
| The animal responds to change due to a complicated interaction between the nervous and hormonal systems |
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Definition
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Term
| Inbreeding increases the chance to produce homozygous recessive traits |
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Definition
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Term
| In order to be expressed, recessive traits must be carried by both the sire and dam |
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Definition
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Term
| Reach can be either positive or negative |
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Definition
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Term
| Random mating is the best way to maximize reach |
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Definition
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Term
| Progeny testing is a good way to evaluate and choose a superior animal, but takes a long time to accomplish |
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Definition
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Term
| Crossbreeding tends to improve lowly heritable traits more than highly heritable traits |
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Definition
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Term
| In rotational cross breeding systems we usually keep replacement females and buy males to bring new genetics to the herd |
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Definition
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Term
| Afferent or sensory neurons send messages from the brain or CNS back to muscles or target tissues |
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Definition
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Term
| The spinal cord is where memory and higher learning reception are processed |
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Definition
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