Sentences with phrase «body plan»

Development of the animal body plan was (and is) controlled by large and complex gene regulatory networks.

This is precisely the stage at which the embryo begins to form specialized cells and a very basic body plan.

Take an existing animal, then experiment with altering the genetic program that controls its embryonic development to achieve the new body plan you desire.

Overall, the research showed that each animal had optimized its ability to swim through the sand using its specific body plan.

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The team also identified genes associated with the mammoth body plan, such as skull shape, small ears and short tails.

The Evolution of Animal Form How do body plans and body parts evolve?

If item 31 is enacted, representative body planning procedures should be considered a relevant criterion in the making of recognition decisions.

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This hypothesis is supported by studies of comparative morphological and functional anatomy, which are based on the recognition of structural similarities between the basic body plans of the various animal groups.

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On the other side, the cephalopods» side, a different body plan evolved and a different kind of nervous system.

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The earliest bird - line archosaurs and the assembly of the dinosaur body plan.

Hox genes, for example, control body plan development and cluster together in almost all animals.

Hydra represent an evolutionary ancient branch of the animal kingdom; they have a simple body plan with a nerve net of only about 3000 neurons.

«From an evolutionary perspective, this [gives] us insight into how body plans evolve between species,» when comparing Parhyale to, for example, the well - studied fruit fly, Drosophila, explains Patel.

Mammalian development was once thought to be essentially different from embryological development in fruit flies, frogs, worms, and other laboratory organisms, where well - defined polarities in the egg — higher concentrations of a protein in one part of the egg than in another, for example — ordained such fundamental aspects of body plan as head and tail, or back and belly.

Similarly, the extinct Tasmanian Tiger, a marsupial mammal, and the wolf, a placental mammal, evolved similar body plans.

The Ediacaran gave way to the Cambrian explosion, 542 million years ago: the rapid emergence of new species with complex body plans, hard parts for defense, and sophisticated eyes.

Despite disparities of estimates of divergence times, broad concensus exists that the developmental control henes such as HOX genes for metazoan body plans was well established prior to the Cambrian.

What encodes the shape of the planarian body plan and how can tissues in general measure and maintain proportions?

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Back in those days, gymnasts tended to be older and, given the general body plans of mature (as in not 17 years old) humans, women have a weight distribution that puts their center of gravity lower.

An ancient animal with a serpent - like body plan and four tiny legs could reveal details about the evolutionary origins of snakes

Both the mutant mouse's condition and the human disease, it turns out, are caused by a high - level disruption in the vertebrate body plan.

According to a report published online today by the journal Nature, mutations in genes that guide embryonic development allowed insects to develop a radically different body plan from that of their crustacean - like ancestors some 400 million years ago.

In order to produce a protein, the corresponding body plan encoded on a particular section of the DNA has to be copied in so - called messengerRNA (mRNA) and thus multiplied.

Critical transitions across states and tipping points lay at the heart of most complex problems in modern biology, including reversible physiological adaptation to environmental change, evolution of interactions in the microbial loop, development of an adult body plan from an embryo, differentiation of a stem cell, and transition from health to disease.

They were fully adapted to an aquatic lifestyle, and had a distinctive body plan comprising a compact, streamlined body, long, paddle - like limbs and an extremely elongated neck with a large number of vertebrae (Fig. 1).

They were fully adapted to an aquatic lifestyle, and had a distinctive body plan comprising a streamlined body, paddle - like limbs and a very long neck with up to 75 individual vertebrae.

Many scientists looked to insects for natural homeotic gene variation, Patel explained, because insects have such diverse body plans.

Beginners could progress with a full body plan performed twice a week, whereas a more advanced lifter might have an upper / lower split or even different body parts on different days.

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This group of quadrupedal (four - legged), herbivorous animals had a relatively simple body plan which varied only slightly throughout the group.

This means that palaeontologists can now trace the evolution of the frog body plan back 190 million years, narrowing the gap between Triadobatrachus and modern frogs and toads.

If the CRISPR gene editing system is to live up to its disease - curing potential, researchers must devise a plan to deliver it into the body

Conway Morris argues that convergence is a dominant force in evolution, related to an «optimum» body plan towards which life will inevitably evolve.

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«They have no eyes, no obvious sense organs or brain but there is a head end, tail end and the primitive body plan of back - boned animals is established,» says Priede.

The fossils of this humanlike species previously revealed an unexpectedly peculiar body plan.

We couldn't have wished for a better intermediate form — it's half - way between the standard fish body plan and the distorted visages of flounders and soles.

The genes that interest Patel determine body plans, controlling how and when a nascent organism forms its limbs, mouth parts, antennae, etc..

Exactly why bony fish managed to prevail in different habitats is the subject of debate: Do they have a better body plan, which is suited to more ecological niches than that of the cartilaginous fish?

The study suggests that early in the evolution of the tortoise body plan a gradual increase in body wall rigidity produced a division of function between the ribs and abdominal respiratory muscles.

But now Rebekah Dawson from the University of Western Australia in Perth has documented the behaviour in both large and medium sized wallabies, and shown the behaviour is driven not just by size, but rather the animal's habitat and overall body plan.