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
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.
Which plant demonstrates minimal morphological changes in response to varying light intensities?
Sunflower
Cotton
Maize
Bean
Which of the following extra-embryonic membranes in amniotes primarily functions in waste storage?
Chorion
Amnion
Yolk sac
Allantois
Plasticity is less pronounced in which of these crop plants?
Rice
Wheat
Soybean
Maize
The archenteron in a developing gastrula will eventually give rise to which structure in the adult organism?
Neural tube
Notochord
Digestive tract
Coelom
In plant tissue culture, the formation of callus from explants, such as leaf mesophyll cells, is an example of:
Redifferentiation
Dedifferentiation
Totipotency
Pleiotropy
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.
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
During tissue culture, if parenchyma cells from a potato tuber are used to generate callus, what process are the cells undergoing?
Redifferentiation
Transdifferentiation
Dedifferentiation
Cell elongation
Which of the following exhibits the least plasticity?
Glass
Copper
Steel
Gold
