SAT - Science - Biology - Heredity and Evolution

Question - 1

The scientist who cut off the tails of mice of successive generation to prove Lamarck's theory wrong was ________

  • A Weismann
  • B Haeckel
  • C Darwin
  • D Wallance

Question - 2

Links between organisms that show branching pattern of evolutionary relationships are shown by ______

  • A Living fossils
  • B Comparative embryology
  • C Phylogenetic trees
  • D Two fossil layers

Question - 3

The offspring resulting from a cross between two pure homoxygous recessives would be ___________

  • A 50% homozygous recessive and 50% homozygous dominant.
  • B 75% homozygous recessive and 25% heterozygous dominant.
  • C 75% homozygous recessive and 25% homozygous dominant
  • D 100% hymozygous recessive

Question - 4

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

  • A Three
  • B Four
  • C Nine
  • D Two

Question - 5

If a colour blind woman marries a normal visioned man, their son's will be

  • A Three-fourth colour blind and one fourth normal
  • B One-half colour blind and one-half normal
  • C All normal visioned
  • D All colour blind

Question - 6

Genes of cytoplasmic male sterility in plants are generally located in

  • A Nuclear genome
  • B Mitochondrial genome
  • C Chloroplast genome
  • D Cytosol

Question - 7

The phenotypic ratio of a dihybrid cross in F2 generation is

  • A 1:4:6:1
  • B 1:2:1
  • C 9:3:3:1
  • D 2:1:4

Question - 8

A couple with blood types A and B may have children with blood types

  • A A & B only
  • B AB
  • C A, B. AB & O
  • D A & O

Question - 9

A gamete contains

  • A Only one allele of a gene
  • B two alleles
  • C three alleles
  • D none of these

Question - 10

Which types of reproduction produces the most variation

  • A Sexual
  • B Asexual
  • C Homosexual
  • D None of the above
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