Suppose that tail length in horses is controlled by a number of additive genes, each of which has 2 alleles. when a true-breeding female with a 12-inch tail is mated to a true-breeding male with a 36-inch tail, all f1 offspring have the same tail length. when the f1 offspring are mated to each other, 7 different tail lengths are seen in the f2 offspring. how many genes contribute to tail length?

Rue or false siblings look simila rbecause they each have some traits of their parents.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens