PKU, results from a recessive allele; persons homozygous for this allele, if untreated, exhibit mental retardation, blue eyes, and light skin color. This character categorized as

#Question id: 1427

#SCPH28 | Zoology

 In females, all the cells in a tumor have the same inactive X chromosome. The reason for this is that:

#Question id: 4731

#SCPH06 I Botany

A pure-breeding strain of squash that produced disk-shaped fruits was crossed with a pure breeding strain having long fruits. The F1 had disk fruits, but the F2 showed a new phenotype, sphere, and was composed of the following proportions

Disk  384            

Sphere 96

 Long  32

What is reason for F2 phenotype?

#Question id: 10509

#I Life Science/ Life Sciences Group – I-V

A different type of mechanical obstacle to herbivory is provided by mineral crystals that are present in many plant species, such as silica crystals known as

#Question id: 9155

#SCPH06 I Botany

The success of plants extending their range northward following glacial retreat is primarily determined by ________.

#Question id: 6988

#I Life Science/ Life Sciences Group – I-V

Many cells in the body divide only rarely, if at all; neurons, red blood cells, and keratinocytes are extreme examples. In which portion of the cell cycle would such cells be considered to be?