Secondary growth occurs as a result of the activity of which two lateral meristems?

a. vascular cambium and cork cambium
b. apical meristem and cork cambium
c. primary meristem and secondary meristem
d. periderm and cork cambium
e. apical meristem and vascular cambium


a

Biology & Microbiology

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____________________ molecules are responsible for the phenotype of an organism

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the traits listed in the map will recombine the most frequently?



a. short aristae length and black body color
b. long aristae and normal wings
c. short aristae length and brown eyes
d. vestigial wings and brown eyes

Biology & Microbiology

What is the ?2 value for a chi-square test for goodness of fit of the null hypothesis?

In Drosophila, singed bristles (sn) and carnation eyes (car) are both caused by recessive X-linked alleles. The wild-type alleles (sn+ and car+) are responsible for straight bristles and red eyes, respectively. A sn car female is mated to a sn+car+ male and the F1 progeny are interbred. The F2 are distributed as follows:





A) 0.5
B) 1.0
C) 2.0
D) 0.4
E) 20

Biology & Microbiology

The poly(

A) tail of an mRNA A) helps transport the pre-mRNA to the cytoplasm. B) keeps the coding sequences from being degraded. C) is added without an RNA template. D) is important in initiation of translation. E) is removed from an mRNA after its maturation.

Biology & Microbiology