Sperm are made in the:
A) vas deferens. B) ovary. C) epididymis. D) testes.
Answer: D
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R is the dominant allele for round pea texture; r is the recessive allele for wrinkled pea texture. If you cross plants
having round peas with plants having wrinkled peas, ____.
a. all progeny will be homozygous for pea texture b. you are conducting a dihybrid cross c. you are conducting a reciprocal cross d. all progeny will have wrinkled peas e. you will be able to determine if the plant with round peas is homozygous or heterozygous for this trait
Clubfoot and cleft palate are traits
A. that are congenital birth defects. B. that have discontinuous distribution. C. that are multifactorial. D. whose distribution can best be explained by the threshold model. E. that have all of these characteristics.
Snapdragons have incomplete dominance of the red and white alleles. What will be the phenotypes and ratios of the F2 generation?
a. 50% white, 50% red b. 25% white, 25% red, 50% pink c. 100% pink d. 100% red
Until the mid-1940s, many scientists considered proteins to be the likely candidates for the genetic material. Which of the following characteristics led scientist to believe DNA was NOT the genetic material?
A) DNA is less abundant than protein. B) DNA is less abundant than protein and DNA has less variation than protein. C) DNA is more stable than protein. D) DNA has less variation than protein. E) Protein can fold into may shapes.