Genetics
2 answers
1) they both pair up
with their homologues during prophase of mitosis.
2) it allowed biologists to study meiosis and mitosis,
revealing the parallels between the behaviors of genes and chromosomes.
3) The involved gene was on the X chromosome.
4) The observed frequency of recombination of
two genes that are far apart from each other has a maximum value of 50%.
Two of the traits that Mendel studied-seed
color and flower color-are linked on the same chromosome.
5) The two genes
are linked.
6) crossing over
7) The two genes likely are located on different
chromosomes.
8) they are located on
the same chromosome.
9) crossing over and
independent assortment
10) genes do not segregate independently during meiosis.
11) proportional to the
distance between them.
12) Drosophila genes cluster into four
distinct groups of linked genes.
13) the frequency of
crossing over varies along the length of the chromosome.
14) cytogenetic map.
15) males are hemizygous for the X chromosome.
16) tortoiseshell female; black male
17) d
18) b
19) e
20) a
21) a gene
present on the Y chromosome that triggers male development.
22) XCXc
and XCY
23) a male
inherits only one of the two X-linked genes controlling hair color.
24. mutation
25. nondisjunction
26. gene flow
27. artificial
selection
28. beard
is a sex limited trait
29. migration.
30. XXY
31. multiple alleles
32. leaves more viable
offspring (copies of its genes) than others of its species
33. transposition
34) 1/2
35) all of his daughters.
36) somatic cells of a
female only
37) Duchenne muscular
dystrophy
38) has four X chromosomes.
39) One gamete will be n + 1, one will be n - 1, and two will be n.
40) n + 1; n + 1; n - 1; n
- 1
41) trisomic. aneuploid.
42) a deletion
43)
translocation.
44) She has
Turner syndrome.
45) 75%
46) trisomy 21.
47)
mitochondrial DNA an X chromosome
48) are unable to breed
with a diploid plant.
49. Choose from group
50. bottleneck
effect