How is Mendel’s Principle of Independent Assortment related to meiosis?
What will be an ideal response?
Mendel explained the production of equal numbers of four different gamete types from a double
heterozygote by assuming that the alleles for the two different genes assort independently during
gamete formation. During meiosis, pairs of chromosomes do indeed segregate independently of the
other pairs of chromosomes to produce gametes.
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If a diploid cell with 40 chromosomes undergoes meiosis, each of the daughter nuclei would have
______ chromosomes.
a. 10 b. 20 c. 40 d. 60 e. 80
An orchid benefits by growing on a tree trunk and the tree is unaffected by the orchid's presence. What is this type of reterm describes this relationship?
a. mutualism b. commensalism c. predation d. symbiosis e. herbivory
After mutagenesis and screening take place, you have found a mutant that is able to grow in soil with high copper content. Protein analysis shows that the concentration of metallothioneins in the mutant is different from that in normal plants. How does the concentration of metallothioneins likely differ in the mutant relative to the normal plant?
A) Metallothioneins are absent in the mutant. B) The concentration of metallothioneins is lower in the mutant. C) The concentration of metallothioneins is greater in the mutant. D) Metallothioneins are the most abundant proteins in the mutant.
Which microscope uses an opaque disk to block light that would enter the objective lens directly?
a) Fluorescence microscope b) Phase-contrast microscope c) Darkfield microscope d) Confocal microscope