An inheritance of $25,000 is divided among three investments yielding a total of$1275 in interest per year. The interest rates for the three investments are 4.5%, 5%, and 8%. The amounts invested at 5% and 8% are $4000 and$10,000 less than the amount invested at 4.5%, respectively. Find the amount invested at each rate.

A eukaryotic donor gene is likely to be expressed in a prokaryotic host organism if (a) the donor gene is a promoter gene (b) the donor gene is transferred along with the genes that turn it on $(c)$ the donor gene is placed beside a gene that is not expressed (d) all of these.

Just for fun, imagine that "shirt-striping" is a phenotypic character caused by a single gene. Construct a genetic explanation for the appearance of the family in the above photograph, consistent with their "shirt phenotypes." Include in your answer the presumed allele combinations for "shirt-striping" in each family member. Identify the inheritance pattern shown by the child.

Which of the following is true of innate behaviors?

(A) Their expression is only weakly influenced by genes.

(B) They occur with or without environmental stimuli.

(C) They are expressed in most individuals in a population.

(D) They occur in invertebrates and some vertebrates but not mammals.

With regard to heterosis, would the following statements be consistent with the dominance hypothesis, the overdominance hypothesis, or both?
A. Strains that have been highly inbred have become monomorphic for one or more recessive alleles that are somewhat detrimental to the organism.
B. Hybrid vigor occurs because highly inbred strains are monomorphic for many genes, whereas hybrids are more likely to be heterozygous for those same genes.
C. If a gene exists in two alleles, hybrids are more vigorous because heterozygosity for the gene is more beneficial than homozygosity of either allele.

Rajiv Puri invested part of his $\$ 20,000$ inheritance in a mutual fund account that pays $7 \%$ simple interest yearly and the rest in a certificate of deposit that pays $9 \%$ simple interest yearly. At the end of one year, Rajiv's investments earned $\$ 1550$. Find the amount he invested at each rate.

You have sequenced the genome of the bacterium Salmonella typhimurium, and you are using BLAST analysis to identify similarities within the S. typhimurium genome to known proteins. You find a protein that is 100 percent identical in the bacterium Escherichia coli. When you compare nucleotide sequences of the S. typhimurium and E. coli genes, you find that their nucleotide sequences are only 87 percent identical. a. Explain this observation. b. What do these observations tell you about the merits of nucleotide- versus protein-similarity searches in identifying related genes?

Complementation occurs when two defective alleles in two different genes are found within the same organism and produce a normal phenotype. What other examples of complementation have we encountered in previous chapters of this textbook?

To find genes that are turned on or off in response to changes in osmolarity (the total concentration of solutes in solution), you grow a culture of E. coli in a medium with high osmolarity and another culture in a medium with low osmolarity. You now perform RNA-Seq analysis on each culture. It is possible that osmotic changes may induce a general stress response that may be seen with other stresses as well (for example, heat shock). How could you distinguish the genes that might be involved in a general stress response from those that are specific for the osmolarity change?

An inheritance of $20,000 is divided among three investments yielding a total of$1780 in interest per year. The interest rates for the three investments are 7%, 9%, and 11%. The amounts invested at 9% and 11% are $3000 and$1000 less than the amount invested at 7%, respectively. Find the amount invested at each rate.

$\text{\blue{WHAT IF?}}$ A rooster with gray feathers and a hen of the same phenotype produce $15$ grays, $6$ black, and $8$ white chicks. What is the simplest explanation for the inheritance of these colors in chickens? What phenotypes would you expect in the offspring of a cross between a gray rooster and a black hen?

In some bird species, the female chooses a mate that is most similar to her in size. This supports a. the good genes hypothesis.b. the runaway hypothesis.c. the sexual dimorphism hypothesis.d. All of these hypotheses could be true.e. None of these hypotheses are true.

Poky is a slow-growing mutant strain of the pink bread mold (Neurospora crassa). If poky is crossed to the normal wild-type mold, all the offspring are poky. But if the reciprocal cross is done, all the offspring are wild type. Why does poky display this type of inheritance, and why is it slow growing?

An inheritance of $24,000 is to be divided among three trusts with the second trust receiving twice as much as the first trust. The three trusts pay interest at the rates of 9%, 10%, and 6% annually, respectively, and return a total in interest of$2210 at the end of the first year. How much was invested in each trust?