Which of the following features would disqualify a plant from being classified as a bryophyte?
A. dispersal of gametes by wind
B. nonvascular tissues
C. presence of flagellated sperm
D. ability to reproduce sexually and asexually
E. gametophyte is the dominant stage of the life cycle
Answer: A
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In skeletal muscle, calcium ions are stored in the sarcoplasmic reticulum.
Answer the following statement(s) true (T) or false (F)
The old order Amish in Lancaster County is an
example of a population that underwent
a. a bottle neck. b. mutation. c. a founder effect. d. gene flow. e. genetic drift
Crossing over is important because it
1.eliminates a bad allele from being in an egg or sperm cell. 2.increases the variation in the DNA of eggs and sperm. 3.increases the number of alleles in the eggs and sperm. 4.changes the alleles for traits on a chromosome.
In what way is chromosomal organization within the nucleus of an interphase cell thought to be related to gene activity?
What will be an ideal response?