Assume that production of hairs on a plant’s leaves is controlled by a single gene with two alleles, H (dominant) and h (recessive). Hairy leaves are dominant to smooth (nonhairy) leaves.
a. Name the genotype(s) of a smooth-leaved plant.
b. Name the genotype(s) of a hairy-leaved plant.
c. What are the possible genotypes of gametes produced by the smooth-leaved plant?
d. What are the possible genotypes of gametes produced by the hairy-leaved plant? Homozygous:
a. Name the genotype(s) of a smooth-leaved plant. hh
b. Name the genotype(s) of a hairy-leaved plant. HH or Hh
c. What are the possible genotypes of gametes produced by the smooth-leaved plant? h h h h
d. What are the possible genotypes of gametes produced by the hairy-leaved plant? Homozygous: all will be H. Heterozygous will be half H and half h.
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Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are examples of specialized ____________________ tissues.
Fill in the blank(s) with the appropriate word(s).
The appearance of complex multicellular animals in the fossil record:
A. coincides with increased levels of oxygen in the atmosphere and ocean. B. occurred at about the same time as the appearance of land plants. C. occurred soon after the appearance of simple multicellular organisms. D. occurred after the appearance of complex multicellular fungi. E. coincides with time period when oxygen first began to accumulate in the atmosphere.
How many chromosomes are found in a human somatic cell nucleus?
What will be an ideal response?
When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed that demonstrated that RNAase failed to prevent transformation of the R strain to S strain. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support or provide information to reject any of these hypotheses.