The main purpose of gametogenesis is to:
Anonymous Quiz
55%
make a haploid cell
29%
specialize the gametes
11%
organize the 3 germ layers
5%
land2
Fertilization normally
Anonymous Quiz
43%
reinstates diploidy.
21%
follows gastrulation.
7%
is required for parthenogenesis.
29%
merges two diploid cellsinto one haploid cell.
An extraembryonic membrane essential for gas exchange in amniote embryos and it is generated from the extraembryonic somatopleure is called
Anonymous Quiz
32%
Allantois
23%
Yolk sac
27%
Amnion
18%
Chorion
Changes in the shape of a cell usually involve a reorganization of the
Anonymous Quiz
8%
nucleus.
71%
cytoskeleton.
16%
extracellular matrix.
5%
transport proteins.
The process by which one cell population influences the development of neighboring cells via interactions at close range is
Anonymous Quiz
19%
Competence
42%
Induction
31%
Instructive interactions
8%
Permissive interactions
The homologue of β-catenin in Drosophila is
Anonymous Quiz
13%
Fushi tarazu
17%
Engrailed.
58%
Armadillo
12%
Cubitus interruptus.
A 180-base pair DNA sequence that characterizes genes that code for homeodomain proteins, including Hox genes.
Anonymous Quiz
16%
MADS box
36%
Homeobox
44%
Homeotic genes
3%
Realisator genes
Extraembryonic membranes develop in
Anonymous Quiz
26%
mammals, but not birds or lizards.
16%
birds, but not mammals or lizards.
9%
lizards, but not mammals or birds.
48%
mammals, birds, and lizards.
The homologue of β-catenin in Drosophila is
Anonymous Quiz
11%
Fushi tarazu
14%
Engrailed.
65%
Armadillo
9%
Cubitus interruptus.
Which of the following is incorrect about amphibian?
Anonymous Quiz
21%
Cleavage is holoblastic
19%
Cleavage is unequal
42%
Cleavage is non-radial and asymmetrical
18%
Yolk is present
Which oft the following not observed in necrotic path of cell death?
Anonymous Quiz
18%
Swollen organells and flocculent mitocondria.
29%
Increase in the cell size
41%
shrinking cell and DNA condensation
12%
Production of the inflammation
What is the apoptosome complex constructed from?
Anonymous Quiz
30%
cytochrome c, Apaf-1 and procaspase-8
26%
cytochrome c, Bcl-2 and procaspase-9
11%
FasL, cytochrome c and Apaf-1
33%
Apaf-1, cytochrome c and procaspase-9
An autosomal gene in Drosophila involved in sex determination. It codes for a splicing factor that initiates a cascade of RNA processing events, which eventually lead to malespecific and female-specific transcription factors, the Doublesex proteins.
Anonymous Quiz
29%
Double sex protein gene
29%
Transformer gene
9%
Fruitless Gene
34%
Sex lethal Gene
Highly proliferative limb bud mesenchyme directly beneath the apical ectodermal ridge (AER) and also region of continuously proliferating and undifferentiated zone is called
Anonymous Quiz
23%
Zone of polarising activity
35%
Apical Ectodermal Ridge
33%
Progress Zone
9%
Apical ectodermal Cap
Species-specific receptors on the vitelline envelope (Extracellular matrix) of sea urchin eggs that bind to the bindin on the acrosomal process of sperm during fertilization is called as
Anonymous Quiz
25%
Bindin Proteins
52%
EBR1 Receptors
18%
Sulfate Containing polysaccharides
5%
Juno and CD9 proteins
Form of regeneration in which the differentiated cells divide but maintain their differentiated functions in called
Anonymous Quiz
16%
Epimorphosis
39%
Compensatory regeneration
19%
Morphalaxis
27%
stem cell mediated regeneration
It if forms in the wound epidermis of an amputated salamander limb and acts similarly to the apical ectodermal ridge during normal limb development is known as
Anonymous Quiz
17%
Progress zone
39%
Apical ectodermal Cap
41%
Zone of polarizing Activity (ZPA)
4%
Lateral plate mesoderm
Fly oogenesis involves the association between Nurse cells and the growing oocyte. Which of the following materials is/are sent by the Nurse cells to the egg?
Anonymous Quiz
15%
only mRNA
18%
only proteins
55%
send both mRNA and proteins
12%
send genetic material (DNA)
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Identify the components of the death-inducing-signalling-complex (DISC)
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16%
NGF, death receptor (CD95), FADD, procaspase-8
41%
Ligand, Death receptor (CD95), FADD, procaspase-8
26%
Ligand, death receptor (CD95), FADD, procaspase-9
17%
Ligand, death receptor (CD95), Apaf-1, procaspase-9