What pattern of cleavage is characteristic of mammals?

A. Holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass distributed uniformly
B. Some yolk, and cleavage resulting in vegetal and animal poles
C. Holoblastic cleavage with eggs containing little or no yolk
D. Holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass concentrated at one pole
E. Meroblastic cleavage with eggs containing almost entirely yolk


Answer: D

Biology & Microbiology

You might also like to view...

Restriction endonucleases typically recognize palindromic DNA sequences and often generate "sticky ends" or single-stranded DNA overhangs at cut sites

Indicate whether the statement is true or false

Biology & Microbiology

Newly inoculated cultures must be ________ at a specific temperature and time to encourage growth.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

A "stitch" in the side experience during vigorous exercise is due to the contraction of the liver as it releases additional blood into the bloodstream.

Indicate whether the statement is true or false.

Biology & Microbiology

Endergonic reactions

a. result in products with less energy than the reactants. b. require a net input of energy. c. occur in the breakdown of glucose. d. are used by cells to provide energy for biological reactions. e. break down large molecules into smaller molecules.

Biology & Microbiology