β-Carotene is the precursor of vitamin A1.
Oxidation at C-15 converts retinol to the aldehyde, retinal, and further oxidation produces retinoic acid, a hormone that regulates gene expression. 

TLS Online TPP Program

#Id: 10001

#XL - T Zoology

Vertebrates have three homologues of the Drosophila hedgehog gene: sonic hedgehog (shh), desert hedgehog

(dhh), and indian hedgehog (ihh)

TLS Online TPP Program

#Id: 8517

#XL - Q Biochemistry

Other proteins function with dynein & involved in regulating the activity of dynein during brain development:

LIS1 and NudE

TLS Online TPP Program

#Id: 9896

#XL - T Zoology

TLS Online TPP Program

#Id: 9956

#XL - T Zoology

Human genome encodes 19 different Wnt proteins, and essential for critical developmental events, including:

Brain development

Limb patterning

Organogenesis

Formation of osteoblasts

TLS Online TPP Program

#Id: 5503

#XL - T Zoology

Stress tolerators can survive and reproduce under extreme environmental conditions, such as very low water availability, very cold temperatures, or high salt concentrations.

Ex - Lichen, Mangrove plant, cacti, Deserts animal.