bio 17

Question 1

sex chromosomes

Answer 1

one of the chromosomes associated with sex, in most animals denoted the X and Y chromosomes
determine sex of individual

Question 2

x chromosome

Answer 2

One of the two sex chromosomes; a normal human female has two copies of the x chromosome; a normal male has one x and one y

Question 3

y chromosome

Answer 3

One of the two sex chromosomes; a normal human male has one X and one Y chromosome

Question 4

x-linked genes

Answer 4

a gene in the x chromosome

Question 5

linked genes

Answer 5

genes that are sufficiently close together in the same chromosome that they do not assort independently

Question 6

recombinants

Answer 6

an offspring with a different combination of alleles from that of either parent, resulting from one or more crossovers in prophase I of meiosis

Question 7

crossover

Answer 7

the physical breakage, exchange of parts, and reunion between non-sister chromatids

Question 8

nonrecombinants

Answer 8

progeny in which the alleles are present in the same combination as the present in a parent

Question 9

frequency of recombination

Answer 9

the proportion of recombinant chromosomes among the total number of chromosomes observed.

Question 10

y-linked genes

Answer 10

a gene that is present in the region of the y chromosome that shares no homology with the x chromosome

Question 11

x linked- males only need 1 allele females need 2 alleles

Answer 11

color blindness is what kind of gene ?

Question 12

males are only affected
sons of affected father do not express phenotype or have mutant allele
daughter of affected males can have affected sons

Answer 12

x-linked pedigrees recessive have

Question 13

only males exhibit the trait
females do no inherit or transmit the trait
all sons of males with the trait also show the trait

Answer 13

y linked gene characteristics

Question 14

recombination

Answer 14

what can break up linked genes to increase genetic variation?