Why don't the grafted hybrids produce apples with a blend of traits from the scion and the rootstock?
A) The rootstock suppresses activation of the scion genes, which alters fruit production.
B) The rootstock is unable to perform photosynthesis and so can't produce fruit.
C) Transplanted nuclei from scion cells regulate gene expression in the rootstock.
D) The rootstock regulates gene expression in the scion but contributes no genetic information for fruit production.
Answer: D
You might also like to view...
The biceps brachii is responsible for flexing the forearm while the triceps brachii extends the forearm. Muscles with such opposite actions are called
(a) cooperative. (b) antagonistic. (c) involuntary. (d) sensory.
An anticodon is a physical component of ________ molecule.
A) a tRNA B) an mRNA C) an rRNA D) a DNA
If both parents are "carriers" due to the presence of one copy of the cystic fibrosis allele, what are the odds that they would have a normal child?
a. 0 b. 25% c. 50% d. 75% e. 100%
Compared to an endocrine gland, an exocrine gland:
A) Is located near the exterior of the body B) Works with chemicals aimed at maintaining the less vital functions of life C) Excretes neurotransmitters, not hormones D) Secretes chemicals through a duct to the target tissue