This karyotype shows that the individual:
1.is male
2.is female
3.has 21 pairs of autosomes and 2 pairs of sex chromosomes
4.has 23 pairs of autosomes
2
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To demonstrate the response of several Daphnia genotypes across a wide range of environments, Luc De Meester (1996 ) measured the change in phototactic behavior of Daphnia sampled from lakes that contained different numbers of predatory fish
The lines drawn between control and fish-induced water are termed ________. [two words] Fill in the blank(s) with correct word
Which of the following organelles has the ability to catabolize alkanes found in oil and petroleum products?
A) mitochondria B) smooth endoplasmic reticulum C) peroxisomes D) lysosomes E) late endosomes
Phil is conducting a seed germination experiment. He places 3 groups of lettuce seeds in a 34º Celsius incubator with adequate moisture. One set of seeds is placed in a dark area with no light source. A second set is placed under artificial light and third set of seeds is placed in direct sunlight. This experiment is intended to test Phil's hypothesis that light is necessary for lettuce seed germination.Based on the experimental design, which variable was the dependent variable?
A. Temperature B. Moisture C. Type of light D. Seeds in the dark E. Germination rate
Approximately what percent of the energy that enters a trophic level becomes available to the next trophic level?
A. 2 to 12 B. 3 to 13 C. 4 to 14 D. 5 to 15 E. 5 to 30