Penetrance specifically refers to the expression of lethal genes in heterozygotes
Indicate whether the statement is true or false
FALSE
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During Drosophila development, there is a regulatory cascade of gene activation. The proper sequence for this cascade is _____
A) bicoid, gap genes, pair-rule genes, and segment polarity genes B) bicoid, pair-rule genes, gap genes, and segment polarity genes C) bicoid, segment-polarity genes, gap genes, and pair-rule genes D) bicoid, gap genes, segment polarity genes, and pair-rule genes
Answer the question using the accompanying figure. According to the graph, which biome is defined as having the
highest overall mean annual precipitation?
a. savanna b. grassland c. tropical rainforest d. tundra e. desert
What can be deduced from this DNA fingerprinting evidence?
1.The boyfriend cannot be ruled out as a suspect.
2.The victim’s cells got mixed with the perpetrator’s semen at the scene.
3.Suspect 2 cannot be ruled out from these results.
4.The only potential perpetrator is suspect 1.
Which of the following features enable organisms like planarian to respire and exchange nutrients?
A. a trilobed gastrovascular cavity B. coelomic fluid C. an open circulatory system D. closed circulatory system