In humans, if nondisjunction led to an individual with a genotype of XO, that person would
A. be male because each cell has only one X chromosome.
B. not survive.
C. be female because each cell lacks a Y chromosome.
D. display both male and female characteristics.
Answer: C
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The organic matter in soil is referred to as
A. mineral soil. B. inorganic substance. C. bedrock. D. humus.
For a given element, all atoms of that element
have the same number of
a. neutrons. b. electrons. c. protons. d. protons and neutrons. e. ions
The products of an endocrine gland:a
only affect their own tissues. b. can have a digestive function. c. always stimulate the target tissue. d. generally have to travel to reach the target tissue. e. are not produced by cells in organs, such as the heart.
Which of the following is found in both eukaryotic and prokaryotic cells?
A) endoplasmic reticulum B) ribosomes C) nucleus D) mitochondria