Which mode of inheritance results in the phenotype of a heterozygote being indistinguishable from that of an organism homozygous for the dominant allele?
A) complete dominance
B) incomplete dominance
C) codominance
D) epistasis
E) incomplete penetrance
A
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Match the following items with the correct phrases.
_______1. Short, hairlike projections used as organelles of locomotion by some eucaryotic cells. _______2. Found on some bacteria; they serve an antiphagocytic function. _______3. Found on some bacteria; they enable the bacteria to adhere to surfaces. _______4. Composed of a protein called flagellin. _______5. Long, whiplike structures having an internal organization that is described as a “9 + 2” arrangement of microtubules. a. pili b. cilia c. eucaryotic flagella d. capsules e. procaryotic flagella
The cell type with the most mitochondria is
A) muscle. B) nerve. C) fat. D) sperm.
Oxytocin is stored until released in the posterior pituitary, but it is produced where?
a. thalamus b. pineal gland c. hypothalamus d. anterior pituitary
The difference between spongy bone and compact bone is that spongy bone:a
is found near the surfaces of bone, while compact bone is found interiorly. b. consists of osteons, while the compact consists of thin strands of bone. c. is filled with red bone marrow, while compact bone is not. d. occupies the diaphysis, while compact bone occupies the epiphysis. e. is involved in bone development, while compact bone is not.