two chromatids joined at the centromere
Two chromatids joined at the spindle
Two chromatin threads joined at the centrioles
thread-like structures not joined together
Correct answer is A
No explanation has been provided for this answer.
The woman cannot produce male children
The man has a low sperm count
The Y component of the man’s sex chromosome was always involved
The X component of the man’s sex chromosome was always involved
Correct answer is D
No explanation has been provided for this answer.
In artificial selection, individuals without desirable traits may be prevented from mating by
outbreeding
sterilization
inbreeding
genetic engineering
Correct answer is B
No explanation has been provided for this answer.
An example of a saprophytic relationship is a / an
vulture feeding on decaying meat
mushroom growing on decaying vegetation
boy eating stale bread
earthworm feeding on decaying vegetation
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements about heredity is not true? In heredity the traits are
carried by genes
contained in the ovum and sperm
always transmitted by one parent
transmitted from parents to offspring
Correct answer is C
No explanation has been provided for this answer.