Sentences with phrase «small gene pools»

In breeds with small gene pools, as is the case with many pure breeds, elimination of identified carriers may not be the best strategy, as genetic diversity would become dangerously compromised.

The gradual loss of alleles from populations is known as «genetic drift», this is a random process which occurs naturally in all populations; it may not matter much in the large gene pool of a large population, but becomes increasingly serious over time in the small gene pools of smaller populations.

Learn about why breeds with large and small gene pools should pay attention to what is happening in their breed.

Again, the «rarer» spaniels have small gene pools which makes them more susceptible to genetic diseases.

There is an abundance of issues that stem straight from the small gene pools that human beings have manipulated in dogs; 60 percent of golden retrievers will die of cancer before they turn eight.

L. lugubris also has a small gene pool: its population consists of clones descended from four or five interspecies couplings.

Scientists use an «inbreeding coefficient» to measure how small a gene pool is.

European breeders were concerned that there was such a small gene pool to work with and decided to crossbreed the American Burmese with the Siamese cat.

Less popular breeds would have smaller gene pools.

So a breed with a smaller gene pool (and thus less genetic variation) would be more likely to have a recessive disorder.

Tollers started out with a small gene pool so they do have some genetic problems.

In consideration of the small gene pool, stud dog owners must use restraint and judgment in the repeated use of a stud dog.

In general, pedigree breeds use a much smaller gene pool for breeding than domestic cats and therefore have a higher risk of developing inherited disorders.

The early years of the breed involved a fairly small gene pool, so the risk for hereditary conditions is worth considering for this breed.

What happens when all of these variants, with a now small gene pool, are bred together to «perfect» this narrow portion of the standard?

A smaller gene pool is the necessary consequence of having the great breeds we have today.

Unfortunately, with the small gene pool comes the exacerbation of the deleterious impact of inbreeding depression especially over time.

(All responsible breeders carefully place their dogs in new homes, but breeders of rare breeds are even more finicky about where their pups go because they are guardians of a small gene pool and need to make sure that all breedable dogs are kept intact and that buyers understand the consequences of owning a pet that is also the repository of genes from that limited pool.)

Whilst some of the lost alleles may be deleterious versions of genes, the process may at the same time increase the proportion of other, mildly deleterious alleles, in the small gene pool, and thus increase the incidence of some diseases.

It is thus a genetic isolate, with a small gene pool, significant inbreeding, and pedigrees with multiply overlapping generations.

This is a genetic weakness, believed to be caused by the relatively small gene pool that was necessary to breed for specific characteristics (both physical and mental).

Like other breeds with a very small gene pool, some of these issues may be compounded and widespread.

Along the way, Bostons were further cross-bred with other breeds such as French Bulldogs and even the mighty English Mastiff in order to bring new blood into what had become a very small gene pool.

It has to do with genetics and a smaller gene pool.

The rarer the breed, the smaller the gene pool is.

With a small gene pool of thirteen dogs, Shih Tzus made their way to Europe in 1952.

Because when they're considered different breeds, they can't be bred together, which means each «breed» has its own small gene pool instead of one large one.

Many trendy purebreds have too small a gene pool for reliable breed health.

In a small gene pool like FCRs, it would be unwise to eliminate carriers as valuable genetic variation could be lost.

A closed registry with a small gene pool undergoing a further tightening due to sire selection and overuse guarantees inbreeding and a steady increase in the occurrence of negative genetic issues.

Purebred dogs have much smaller gene pools, which can lead to serious medical problems.

However, with only a small gene pool to draw upon, a genetic bottleneck was created, potentially causing the present - day problems of congenital defects such as cleft palates, spinal deformities and heart, brain and eye deformities.

Not exact matches

Gene therapy has the potential to save lives, but the pool of people who suffer from the orphan diseases, or conditions that pharmaceutical companies have historically ignored, is relatively small.

Those with naturally bigger teeth will be better able to utilize this food resource, allowing them to survive when members of their group with smaller teeth starve, thus leaving the big toothed ones to prosper and reproduce, thus increasing the frequency of big teeth genes in their gene pool.

This is nature in action and a small part of the inevitable process that will remove religiousness from the gene pool.

Even if Noah impregnated all of them at once, or his sons did their respective wives, and then they all repeated the process 14 years later (give or take) when the 1st offspring became fertile, how could different races with distinct physiological adaptation arise from such a small, virtually identical gene pool 4,000 years ago?

Small farms are also more likely to grow more variety, too, says CNAD, protecting biodiversity and preserving a wider agricultural gene pool, an important factor in long - term food security.

This pattern of disease susceptibility suggests that Finns ancestral gene pool was small and was cut off early on from the rest of Europes.

We could get radiation - resistance genes, for example, from the Bdelloid rotifer, a class of small invertebrates that live in freshwater pools and survive megadoses of ionizing radiation.

It's important to try to diversify the gene pool while the population is still small, biologists say; the larger it gets, the less likely management actions are to be effective.

Biologists say that if the dam is not stopped, the gene pool in the subgroups will be so small the bears will no longer be viable and they could disappear within a couple of decades.

Such small, isolated populations are essentially doomed: even if the forest fragments survive, sooner or later dwindling gene pools or disasters such as forest fires and disease outbreaks will wipe them out.

Is it also possible that their gene pool is the major factor for longevity and that diet plays a small role?

This could either be an advantage as there may be more serious people on it or a disadvantage that the gene pool is too small or people have just joined for curiosity to start with.

Leaving aside the fact that none of these folks look like they belong in the same gene pool (and The Wire has a funny article about how only one of the actors in the film is actually Jewish), the premise has promise, since forcing the members of a dysfunctional family (and there is much «dys» here) to spend time in a small space could lead to some funny results.

The conclusions from the seminar were (a) don't throw out the COMMD1 test and (b) as a numerically small breed we can not afford to restrict the gene pool.

However, the gene pool for purebred cats is pretty small, which colors all breeding considerations.

If your pup has any shar - pei or bloodhound genes in her pool, she could end up being smaller than you anticipated, wearing her baggy suit well into adulthood.

To accomplish this Bell says that breeds with small populations (LE list) need a mentoring program for their puppy buyers because healthy gene pools require genetic diversity and the careful selection of sires and dams in order to produce the desired traits and avoid the deleterious mutations that accompany unwanted traits and diseases.

So when you begin mixing breeds you start adding new genes into the pool and the chances of the genetic diseases transferring to the offspring get smaller and smaller.