Practice Questions

TLS Online TPP Program

#Question id: 12227

During the course of the formation of a parasite/host relationship, a critical first step in this evolution would be

#Unit 10. Ecological Principles

Changing the behavior of the host or intermediate host.
Developing asexual reproduction.
Deriving nourishment without killing the host.
Starting as an ectoparasite and then later becoming an endoparasite

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TLS Online TPP Program

#Question id: 15740

#Unit 5. Developmental Biology

The position of the testis-determining gene was narrowed down to a 35,000-base-pair region of the:

TLS Online TPP Program

#Question id: 15741

#Unit 5. Developmental Biology

The region of the Y chromosome have a male-specific DNA sequence that encodes a peptide of 223 amino acids. This gene is called:

TLS Online TPP Program

#Question id: 15742

#Unit 5. Developmental Biology

Which of the following hormone enables the development of the Müllerian duct into the uterus, oviducts, cervix, and upper portion of the vagina?

TLS Online TPP Program

#Question id: 15743

#Unit 5. Developmental Biology

Which of the following hormone secretes from the developing Sertoli cells, during embryonic development, that blocks development of the female ducts?

TLS Online TPP Program

#Question id: 15744

#Unit 5. Developmental Biology

In XX gonads, germ cells are essential for the:

TLS Online TPP Program

#Question id: 15745

#Unit 5. Developmental Biology

Which of the following protein acts synergistically with R-spondin1 (Rspo1)?