1)A black guinea pig crossed with an albino guinea pig produced twelve black offspring. When the albino was crossed with a second black guinea pig, six blacks and six albinos were obtained. What is the best explanation for this genetic situation?

A)Albino is recessive; and the second black guinea pig was homozygous dominant

B)Albino is co-dominant; and the second black guinea pig was heterozygous

C)Albino is recessive; and the second black guinea pig was heterozygous

D)Albino and black are codominant.

2)Which of the following processes would best help explain independent assortment?

A)the fact that any pair of chromatids in a tetrad can cross over

B)the random arrangement of chromosomes at metaphase I

c)the separation of chromatids at anaphase II

D)the random arrangement of gene loci on a chromosome

E)the random arrangement of chromosomes at metaphase II

Explain in detail why incubation time affects solubility. It has also been shown that the reaction of whey protein with polysaccharides can improve solubility at pH 4.5. Why is this particularly important for beverages?

Which most effectively describes the relationship between carrier and channel proteins?

(Select all that apply.)

A) Carrier proteins are passive transport mechanisms, but channel proteins can be either active or passive.

B) Carrier proteins are active transport mechanisms, but channel proteins can be either active or passive.

C) Channel proteins are active transport mechanisms, but carrier proteins can be either active or passive.

D) Channel proteins are passive transport mechanisms, but carrier proteins can be either active or passive.

1)Cystic fibrosis an autosomal recessive disorder caused by a single gene, affects the lungs, the pancreas, the digestive system, and other organs, resulting in symptoms ranging from breathing difficulties to recurrent infections. Which of the following terms best describes this?

A)incomplete dominance

B)multiple alleles

C)codominance

D)epistasis

E)pleiotropy

2)What is one function of a signal peptide during peptide translation?

A)to terminate translation of the messenger RNA

B)to signal the initiation of transcription

C)to bind RNA polymerase to DNA and initiate transcription

D)to direct an mRNA molecule into the cisternal space of ER

E)to translocate polypeptide across the ER membrane

3)Which of the following statements correctly describes the function of a signal peptide?

A)It helps target a protein to the ER.

B)It signals the initiation of transcription.

C)It terminates translation of messenger RNA.

D)It directs an mRNA molecule into the cisternal space of the ER.

Science continuously moves forward and uncovers more and more about the human body. We have made monumental strides in human genetics and this has led to recent discussions about patenting genes. This sits in front of the Supreme Court and could have a major impact based upon the decision. Research the pros and cons of this issue and share with the class.

What and how is sexual dimorphism influenced? Radish vs. human. (Evolutionary Biology please give a broad and clear answer. thank you!!)

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4. What is a segmental duplication? Are they common in natural populations? Give two examples, not found in your textbook, of how they could affect a person’s phenotype.

1)Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son. What are the genotypes of the parents?

A)XⁿXⁿ and XⁿY

B)X^NX^N and X^NY

C)X^NXⁿ and X^NY

D)X^NX^N and XⁿY

2)A poison interferes with the action of RNA polymerase II, but not RNA polymerase I or III. Which of the following is likely to be true of a cell exposed to the poison?

A)production of tRNA would be stopped but not rRNA or mRNA.

B)production of mRNA would be stopped but not rRNA or tRNA.

C)A cell could perform transcription but not translation

D)The cell would ignore the G1 checkpoint and eventually become cancerous.

outline the difference in the moles of actions of lipid soluble hormone versus water soluble hormones

Explain how photosystems are used during the light reactions to convert solar energy to chemical energy, and list what is required and what is produced by the light and dark reactions. Explain how the light and dark reactions work together.

When referring to MO BIO Microbial DNA Isolation kit protocol...

8. a) How is the DNA separated from the rest of the cell debris after the lysis step?

b) Where will the micro-beads be once the DNA is separated from the cell debris?

Why is it expected to take at least a year to develop a COVID-19 vaccine for the general public? List the steps that must be taken.

1)A homozygous tomato plant with red fruit and yellow flowers was crossed with a homozygous tomato plant with golden fruit and white flowers. The F₁ all had red fruit and yellow flowers. The F₁ were testcrossed by crossing them to homozygous recessive individuals, and the following offspring were obtained:
Red fruit and yellow flowers41
Red fruit and white flowers7
Golden fruit and yellow flowers8
Golden fruit and white flowers44
How many map units separate these genes?

A)17.6

B)17.1

C)15

D)18.1

2)Which of the following, if damaged, would most directly hinder RNA polymerase from attaching to the beginning of a gene?

A)introns

B)exons

C)UTR's (untranslated regions)

D)snRNA

E)promoter region