Sperm are formed originally in the ________
A) vas deferens
B) bulbourethral glands
C) prostate gland
D) seminiferous tubules
D
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Which of the following statements correctly describes a quantitative trait?
A. People who are homozygous for the group of genes associated with skin pigment have either lighter or darker skin than those who are heterozygous for those genes. B. The alleles of the gene for red hair color is masked by the gene for brown hair color. C. A person heterozygous for dwarfism will always have the dwarf phenotype. D. A woman who has one allele for color blindness will not be color blind, but a man who has one allele for color blindness will be color blind. E. 25% of the offspring from a cross of two fruit flies that are heterozygous for curly wings will have curly wings.
List the zones that comprise rocky shores. Which of the zones would you expect to have the highest species diversity and which would have the lowest species diversity? Explain your answer
What will be an ideal response?
The mimicry of coral snakes by scarlet king snakes is an example of Batesian mimicry.
Answer the following statement true (T) or false (F)
In an experiment, Jokela et al. reared 14 replicate populations of a snail that is poly-morphic for sexual/asexual reproduction under controlled identical conditions in the lab
Each population started with 35% asexual and 65% sexual experiments. The figure be-low shows the proportions of asexual after a year-long experimental run. What are possible explanations for this result? a. All asexuals survived better under the experimental conditions. b. Asexual females produced more offspring per individual than sexual fe-males. c. The cost of males leads to faster population growth for the asexual sub-population. d. A novel mutation after the start of the experiment led to the increased sur-vival of the asexual line with the mutations. e. A, B, and C.