What did Walter Sutton observe about the relative numbers of chromosomes in the body cells and sex cells of grasshoppers? A. The sex cells have half the number of chromosomes as body cells.

B. The sex cells have 1/4 the number of chromosomes as body cells.

C. The sex cells have the same number of chromosomes as body cells.

D. There was no identifiable ratio observed between sex cells and body cells

Nitrofurantoin used during the fifth week of pregnancy places the neonate at risk for which condition?

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.