2GT3 Chapter 5

Which chromosome does not determine sex in Drosophila?

In Drosophila, what is the ratio of X chromosomes to haploid sets of autosomes in normal males?

Which theory states that the balance between X and autosomes determines sex differentiation in Drosophila?

Which environmental factor influences sex determination in reptiles like crocodiles and turtles?

In reptiles with temperature-dependent sex determination, what happens at low temperatures?

Which region of the Y chromosome shares homology with regions on the X chromosome and recombines with it during meiosis?

What is the function of the SRY gene located adjacent to the pseudoautosomal region of the Y chromosome?

Which gene on the Y chromosome is responsible for male sex determination in mammals?

What is the primary sex ratio reflective of in a population?

Which region of the Y chromosome is classified as heterochromatic?

What is the most common characteristic found in males with 47,XYY karyotype?

During early embryonic development, the embryo is initially hermaphroditic, which means:

The Y chromosome in humans has approximately how many genes?

Which chromosome is responsible for triggering the differentiation of gonadal ridges into ovaries or testes in humans?

Which gene on the Y chromosome plays a crucial role in male sexual differentiation?

What is the primary role of the Y chromosome in determining maleness?

What is the primary cause of Klinefelter syndrome?

What is the primary characteristic of Turner syndrome?

What is the most common characteristic found in males with 47,XYY karyotype?

What is the primary function of the pseudoautosomal region of the Y chromosome?

What is the most common karyotype associated with Triplo-X syndrome?

Which chromosomal phenomenon is responsible for dosage compensation between males and females?

What is the significance of Barr bodies observed in female somatic cells?

What is the key characteristic of individuals with Klinefelter syndrome (47,XXY)?

What is the primary reason why females with Turner syndrome (45,XO) are not entirely normal?

What is the primary reason why females with triple or tetra Xs (47,XXX or 48,XXXX) are not entirely normal?

What is the primary function of the SRY gene located on the Y chromosome?

What is the primary role of the pseudoautosomal regions (PARs) on the Y chromosome?

What is the role of the SRY (sex-determining region) gene on the Y chromosome?

What is the primary cause of Klinefelter syndrome?

What is the primary cause of Turner syndrome?

What is the primary sex ratio reflective of in a population?

What is the primary function of the male-specific region (MSY) of the Y chromosome?

What is the primary cause of the male phenotype in individuals with Klinefelter syndrome (47,XXY)?

What is the primary reason for the tall stature observed in individuals with 47,XYY syndrome?

What is the primary factor that triggers the differentiation of gonadal ridges into ovaries or testes during early embryonic development in humans?

In individuals with 47,XXX syndrome (Triplo-X), what is the primary reason for the observed phenotypic variability?

What is the primary reason for the male phenotype in individuals with a normal 46,XY karyotype?

What is the primary reason for the observed intellectual disability in some individuals with 47,XXX syndrome (Triplo-X)?

What is the primary function of the XIST RNA in mammals?

In Drosophila, what determines sex?

Which of the following patterns of temperature-dependent sex determination (TSD) in reptiles is correct?

Which human chromosomal condition is associated with the presence of an extra X chromosome in females?

What is the primary role of the Y chromosome in human sex determination?

Which chromosomal condition in humans is associated with the presence of an extra Y chromosome?