During oogenesis in mammals, polar bodies are formed. Which statement best describes the function of polar bodies?
To provide nutrients to the developing oocyte.
To allow for the reduction of chromosome number while retaining most of the cytoplasm in the oocyte.
To initiate the process of fertilization.
To guide the sperm towards the oocyte.
Related Questions
Which of the following processes occurs when leaf mesophyll cells in tissue culture revert to an undifferentiated callus?
Differentiation
Redifferentiation
Dedifferentiation
Organogenesis
Among the following, which plant shows the least phenotypic variation in response to water availability?
A desert cactus
A grassland wildflower
A submerged aquatic plant
A deciduous tree
Richmond-Lang effect is concerned with
Delay in senescence
Breaking dormancy
Suppression of apical dominance
Cell elongation
Unlike the formation of vascular tissues from procambium, the development of interfascicular cambium from parenchyma cells represents:
Redifferentiation
Dedifferentiation
Differentiation
Cell maturation
In tissue culture experiments, leaf mesophyll cells are placed in a culture medium to form callus. This phenomenon is known as:
Redifferentiation
Dedifferentiation
Differentiation
Transdifferentiation
A mutation affects the function of the Hox genes in a developing Drosophila embryo. Which of the following is the MOST likely consequence?
Premature termination of embryonic development.
Failure of gastrulation.
Homeotic transformations, leading to segments developing with characteristics of other segments.
Lack of differentiation of germ layers.
Intussusception is
Removal of old material from cell wall
Deposition of new material into cell wall during differentiation
Deposition of new material into cell wall during cell division
Another name of cell division
In plants, the conversion of permanent tissues like parenchyma to meristematic tissue like interfascicular cambium is an example of:
Redifferentiation
Differentiation
Dedifferentiation
Senescence
Which process is demonstrated by the formation of interfascicular cambium from fully differentiated parenchyma cells?
Differentiation
Redifferentiation
Cell elongation
Dedifferentiation
Plasticity is less pronounced in which of these crop plants?
Rice
Wheat
Soybean
Maize
