Question

The pattern of embryonic development in which only the cells lacking yolk subsequently undergo cleavage is called ______. A. holoblastic development, which is typical of marsupial mammals B. meroblastic development, which is typical of humans C. holoblastic development, which is typical of amphibians D. meroblastic development, which is typical of birds

Answer 1

The pattern of embryonic development in which only the cells lacking yolk subsequently undergo cleavage is called meroblastic development, which is typical of birds.

Therefore, the correct answer is Option D.

What is embryonic cleavage?

• Embryonic cleavage is the division of cells which occurs just after fertilization and are involved in the early development of the embryo.
• The different cells formed after cleavage are called the blastomeres and these are present in a compact mass called the morula.
• The end product of cleavage is blastula which is a hollow sphere with a cavity called blastocoel.
• Cleavage can be of different types depending upon the concentration of yolk in the egg as yolk does not undergo cell division.
• In holoblastic cleavage, the entire egg divides as yolk is present in very less concentration.
• In meroblastic cleavage, only the cells lacking yolk divide.

Learn more about cleavage here:

brainly.com/question/9962891

#SPJ4