1395489

Question: 17. An example of a mechanism in which sex is determined by environmental factors A. females are …


17. An example of a mechanism in which sex is determined by environmental factors A. females are produced from fertilized eggs, whereas males are produced from unfertilized eggs B. when the male cares for the eggs, all of the offspring will be male, whereas if the female cares for the eges, all of the offspring will be female C. fertilized eggs incubated at one temper ature produce males, whereas eggs incubated at a different temperature produce females D. males will have a Y chromosome, whereas females will not have a Y chromosome 18. Genes that are not required for survival, but are likely to be beneficial to the organism are called A) essential genes B. lethal alleles E. conditional lethal alleles C. semilethal alleles D) nonessential genes 19. Temperature-sensitive alleles are examples of A) essential genes C. semilethal alleles B. lethal alleles E. conditional lethal alleles D) nonessential genes 20. A heterozygote possesses a phenotype that is intermediate between the homozygous dominant and homozygous recessive phenotypes. This is most likely an example of A. lethal alleles B. incomplete dominance D. sex-influenced inheritance C. gene dosage 21. In four-oclock plants, red flower color is dominant to white flower color. However heterozygous plants have a pink color. If a pink flowered plant is crossed with a white flowered plant, what will be the phenotypic ratios of their offspring? A) 4 red, % pink, 4 white D) ½ pink, ½ white B. all pink C. all white ENS red, ½pink 22. The coat color of rabbits is an example of a(n) A) semilethal allele C) multiple allele system B. sex-linked trait D. incomplete dominance 23. In human blood groups, the fact that an individual can have an AB blood type is an example of A) incomplete dominance B.incomplete penetrance D) temperature-sensitive conditional allele C. sex-influenced trait E. codominance

Show transcribed image text

17. An example of a mechanism in which sex is determined by environmental factors A. females are produced from fertilized eggs, whereas males are produced from unfertilized eggs B. when the male cares for the eggs, all of the offspring will be male, whereas if the female cares for the eges, all of the offspring will be female C. fertilized eggs incubated at one temper ature produce males, whereas eggs incubated at a different temperature produce females D. males will have a Y chromosome, whereas females will not have a Y chromosome 18. Genes that are not required for survival, but are likely to be beneficial to the organism are called A) essential genes B. lethal alleles E. conditional lethal alleles C. semilethal alleles D) nonessential genes 19. Temperature-sensitive alleles are examples of A) essential genes C. semilethal alleles B. lethal alleles E. conditional lethal alleles D) nonessential genes 20. A heterozygote possesses a phenotype that is intermediate between the homozygous dominant and homozygous recessive phenotypes. This is most likely an example of A. lethal alleles B. incomplete dominance D. sex-influenced inheritance C. gene dosage 21. In four-o'clock plants, red flower color is dominant to white flower color. However heterozygous plants have a pink color. If a pink flowered plant is crossed with a white flowered plant, what will be the phenotypic ratios of their offspring? A) 4 red, % pink, 4 white D) ½ pink, ½ white B. all pink C. all white ENS red, ½pink 22. The coat color of rabbits is an example of a(n) A) semilethal allele C) multiple allele system B. sex-linked trait D. incomplete dominance 23. In human blood groups, the fact that an individual can have an AB blood type is an example of A) incomplete dominance B.incomplete penetrance D) temperature-sensitive conditional allele C. sex-influenced trait E. codominance

(Visited 1 times, 1 visits today)