Biology genetics help?

Question

5. combination of alleles is either AA or Aa

7. the change in allele frequencies over time

10. combination of alleles can only be aa

12. this is an idea based upon research and observations, without experimental proof

14. the location of a gene on the chromosome

15. a change in DNA, can lead to evolution over time

16. an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

17. the second part of protein synthesis, this occurs outside the nucleus (mRNA is read, polypeptide chain is formed to create a protein)

20. ______ over occurs during meiosis, and is one source of genetic variation

21. a theory based upon differential reproductive success

22. ______is the base in RNA which replaces thymine

24. cell division to create somatic cells

25. the outward appearance, the manifestation of the genotype

26. a segment of DNA encoding for a particular polypeptide





Down

1. cell division to create gametes

2. sex cells; haploid

3. the fertilized egg; diploid

4. A nucleic acid that carries the genetic information in the cell and is capable of self-replication and protein synthesis

6. two sources of genetic ________ include founder effect and population bottlenecks

8. DNA _______, this is the first part of mitosis or meiosis, and is necessary so that a full complement of DNA is given to every cell

9. The genetic makeup, as distinguished from the physical appearance, of an organism or a group of organisms

11. set of three amino acid bases

13. _________ chromosomes have genes at the same loci coding for the same traits

16. the first step in protein synthesis, this occurs inside the cell nucleus (DNA is made and transcribed into an mRNA strand)

18. body cells

19. these are your body chromosomes (#1-22) and they occur in homologous pairs

23. the alternative form of a gene (i.e. hair colors)

Answer 1

5. combination of alleles is either AA or Aa
(not sure, could be "wild-type", normal, or dominant)

7. the change in allele frequencies over time
(evolution)

10. combination of alleles can only be aa
(homozygous recessive)

12. this is an idea based upon research and observations, without experimental proof
(hypothesis)

14. the location of a gene on the chromosome
(locus)

15. a change in DNA, can lead to evolution over time
(mutation)

16. an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
(theory)

17. the second part of protein synthesis, this occurs outside the nucleus (mRNA is read, polypeptide chain is formed to create a protein)
(translation)

20. ______ over occurs during meiosis, and is one source of genetic variation
(crossing)

21. a theory based upon differential reproductive success
(natural selection or evolution)

22. ______is the base in RNA which replaces thymine
(uracil)

24. cell division to create somatic cells
(mitosis)

25. the outward appearance, the manifestation of the genotype
(phenotype)

26. a segment of DNA encoding for a particular polypeptide
(coding region or exon)





Down

1. cell division to create gametes
(meiosis)

2. sex cells; haploid
(gametes)

3. the fertilized egg; diploid
(zygote)

4. A nucleic acid that carries the genetic information in the cell and is capable of self-replication and protein synthesis
(DNA)

6. two sources of genetic ________ include founder effect and population bottlenecks
(drift)

8. DNA _______, this is the first part of mitosis or meiosis, and is necessary so that a full complement of DNA is given to every cell
(replication)

9. The genetic makeup, as distinguished from the physical appearance, of an organism or a group of organisms
(genotype)

11. set of three amino acid bases
(codon)

13. _________ chromosomes have genes at the same loci coding for the same traits
(homologous)

16. the first step in protein synthesis, this occurs inside the cell nucleus (DNA is made and transcribed into an mRNA strand)
(transcription)

18. body cells
(somatic)

19. these are your body chromosomes (#1-22) and they occur in homologous pairs
(autosomes)

23. the alternative form of a gene (i.e. hair colors)
(allele)

Answer 2

Ok. these are my guesses. hope this helps

5. dominant
7. ?
8. recessive
12. theory
14. locus
15. mutation
16. Scientific Law?
17. translation
20. crossing-over
21. ?
22. Uracil
24. mitosis
25. phenotype
26. gene

down.

1. Meiosis

2. gametes, n
3. 2n?
4. dna..deoxyribonucleic acid
6. ?
8. replication
9. genotype
11. codons?
13. homologous chromosomes
16. transcription
18. somatic cells?
19. ?
23. allele

hope this helps