Help me help my sister?

The law of independent assortment states that the inheritance of alleles for one trait is not affected by the inheritance of alleles for a different trait if the genes for the traits are on _____.


(1 point)


separate chromosomes





homologous chromosomes





the same chromosome





homozygous chromosomes





2. Cells containing two alleles for each trait are described as _____.


(1 point)


haploid





gametes





diploid





homozygous





3. A female guinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur color. In a litter of eight offspring, there would probably be _____.


(1 point)


8 black guinea pigs





4 black and 4 white guinea pigs





2 black, 4 gray, and 2 white guinea pigs





8 white guinea pigs








Figure 10-8


4. In Figure 10-8, what gametes will result if each chromatid crossed with a nonsister chromatid?


(1 point)


A


B


C


D


5. The backbone of a DNA molecule is made of which two components?


(1 point)


phosphate molecules and ribose sugars





deoxyphosphate molecules and ribose sugars





phosphate molecules and deoxyribose sugars





deoxyphosphate molecules and deoxyribose sugars





6. The pairing of _____ in DNA is the key feature that allows DNA to be copied.


(1 point)


nucleotides





nitrogen bases





chromosomes





codons





7. An RNA molecule is a polymer composed of subunits known as _____.


(1 point)


polysaccharides





ribose molecules





nucleotides





uracil molecules





8. X rays, ultraviolet light, and radioactive substances that can change the chemical nature of DNA are classified as _____.


(1 point)


growth regulators





metamorphic molecules





hydrolytic enzymes





mutagens





9. A DNA segment is changed from -AATTAGAAATAG- to -ATTAGAAATAG-. This is a ____.


(1 point)


frameshift mutation





point mutation





inversion





translation








Figure 11-4


10. What will be the result of the mutation in Figure 11-4?


(1 point)


it will have no affect on protein function





only one amino acid will change





nearly every amino acid in the protein will be changed





the organism will die





11. If a female fruit fly heterozygous for red eyes (XRXr) crossed with a white-eyed male (XrY), what percent of their offspring would have white eyes?


(1 point)


0%


25%


50%


75%


12. The blood types A, B, AB, and O are the result of _____ inheritance.


(1 point)


multiple allelic





polygenic





sex-linked





simple dominant





13. Two healthy parents produce a child with the genetic disorder of cystic fibrosis, which is the result of a recessive gene. What would be the best explanation for this inheritance?


(1 point)


This is not the result of a genetic disorder.





Both parents carried the recessive gene for cystic fibrosis.





Cystic fibrosis is a chromosomal mutation that occurred during development and is not related to the parental genotypes.





Cystic fibrosis is caused by a mutation in the 21st pair of chromosomes.





14. Most human genetic disorders are caused by the expression of _____.


(1 point)


recessive alleles





two dominant alleles





one dominant allele





sex-linked heredity








Figure 12-5


15. According to Figure 12-5, what is the chance that individual A will be afflicted with Huntington's?








(1 point)


25%





50%





75%





100%





16. Recombinant DNA are currently used to produce _____.


(1 point)


clothing dye, cheese, and laundry products





human antibodies and vaccines





crops that test better and stay fresh longer





all of these





17. In 1974, Stanley Cohen and Herbert Boyer inserted a gene from an African clawed frog into a bacterium. The bacterium produced the protein coded for by the inserted frog gene. This insertion of a small fragment of frog DNA into the DNA of another species can most accurately be called _____.


(1 point)


cloning





genetic engineering





electrophoresis





gene therapy





18. The Human Genome Project may make use of which of the following to diagnose genetic disorders before birth?


(1 point)


cell cultures





gel electrophoresis





PCR





all of the above





19. How does polygenic inheritance differ from Mendelian inheritance?


(3 points)








20. The gene for color blindness in humans is found on the X chromosome. A boy has a color-blind father. Will the boy be color blind? Explain.


(3 points)








21. Discuss how DNA fingerprinting works in crime analysis.


(3 points)








22. What benefits to agriculture could stem from scientists being able to engineer plants genetically?


(3 points)








Use the passage to solve the following problem.





Some biology students wanted to determine whether a pair of brown mice purchased at a pet store was homozygous dominant or heterozygous for fur color. They let the mice mate and examined the offspring. Six mice were born. All six had brown fur.





Some of the students felt that this was enough evidence to prove that the mice were homozygous for brown fur color. Other students did not, so another experiment was planned.





23. Describe the next experiment the students could conduct to determine whether the parent mice are homozygous brown or heterozygous. Explain your answer.


(6 points)

Help me help my sister?
What the hell is your problem? I give you all kinds of answers on a couple of you other posts and then you delete your qustion. I think you probably could've picked someone as best answer instead, even if it wasn't me you chose.
Reply:I think your sister should do her own assignment instead of trying to cheat and get answers from someone else.