Genetics Pre Test

Welcome to your Genetics Pre Test

1. A group of students made the observations listed below about the size, shape, and appearance of their hands. Which of the students’ observations describe inherited traits?
2. The hydra is a very small, simple animal that lives in water. Hydras reproduce asexually by budding, a process in which a bud breaks off an adult hydra and floats away. Which of the following best describes a hydra bud?
3. A tiger cub has a pattern of stripes on its fur that is similar to that of its parents. Where are the instructions stored that provide information for a tiger’s fur pattern?
4. Sexual reproduction in animals depends on the production of gametes (egg and sperm cells). Which of these processes produces gametes in animals?
5. Scientists can bioengineer skin in a laboratory to treat severe burns and other types of skin injuries. This bioengineered tissue is grown from living cells. The cellular process that enables the cells to produce more identical cells that can develop into tissue is _____
6. In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel (bb) is crossed with a heterozygous black cocker spaniel (Bb), which of the following genotypic ratios can be expected?
7. In cattle the allele for cloven hooves (H) is dominant over the allele for mule-foot hooves (h). The phenotype for each trait is shown in this picture. What is the probability of cloven hooves in the offspring of parents that are heterozygous (Hh) for the trait?
8. Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
9. During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The strong contraction of the smooth muscle in the uterus helps push the baby through the birth canal so that delivery can occur. Mutations can have ______
10. An organism's phenotype is influenced by ____