What is inheritance in biology? What is genetic variation? What is an example of a recessive lethal allele? What are the hallmarks of autosomal recessive traits? What are the distinguishing features of the hominin lineage? What is an ancestral characteristic of all placental mammals?
All animals evolved from a single lineage of unicellular precursors more than 600 million years ago. Thus, the biological and genetic foundations for animal sensation, cognition and behavior must necessarily have arisen by modifications of pre-existing features in their unicellular ...
This dilemma has helped give rise to a new kind of science calledbioinformatics.It’s an exciting field, despite its woefully dull name. Its mission is to use computers to help make sense of molecular biology–in this case, by traveling through vast oceans of online information in search of...
What is a population bottleneck, and how does it affect genetic diversity? What is a change in allele frequency of a species or population over time called? On what basis are populations assigned to the same biological species? In biology, when dealng with population size, what is the differ...
1982). In evolutionary biology, a relict species remains of a group that is mainly extinct (Grandcolas et al. 2014; Fig. 1). The basis for this inference is the observation that a species stands alone on a long phylogenetic branch, by comparison with a larger sister-group, because of ...
Recent years have seen so-called natural killer T (NKT) cells emerge as important regulators of the immune response. The existence of NKT-cell subsets, and other types of T cell that resemble NKT cells, is an ongoing source of confusion in the literature
Stomatal closure is sensitive to high atmospheric humidity, which could promote bacterial entry into the plant. After entry into the plant, P. syringae encounters the apoplast, a potentially carbohydrate-rich but heavily defended living space for microorganisms. Recent advances in the identification of...
What does prosimian mean in biology? Definition. noun, plural: prosimians.Any of the primitive, nocturnal primates, such as lemurs, lorisoids, haplorrhine tarsiers, etc. Is a chimpanzee a prosimian? Prosimians arethe most primitive of the living primates, which also include the monkeys and ...
lineage / ˈlɪniɪdʒ / n. 血统;家系,[遗] 世系 Therapods are two-legged dinosaurs that include familiar predators likeVelociraptorsand T. Rex, which quite likely had some kind of feathers. While many feathered d...
Of a perishable item, having existed for most of, or more than, its shelf life. An old loaf of bread Old Of a species or language, belonging to a lineage that is distantly related others The ginkgo is one of the oldest living trees Basque is the oldest language in Europe Old Having ...