The sperm and egg each contribute 50% of the nuclear genetic material to the zygote that becomes the embryo and the new plant. Mitochondria and plastids that become chloroplasts are passed primarily from the female parent. What feature of the male or female gametophytes accounts for this?

Question

Quizplus · Accepted Answer

The female gametophyte, or embryo sac, is formed from one surviving megaspore and is therefore larger and more complex than the male gametophyte, or pollen grain. This allows for the accumulation of cytoplasm and organelles, such as mitochondria and plastids, which are primarily passed down from the female parent to the offspring.

The Sperm and Egg Each Contribute 50% of the Nuclear