Sprint LTE 10:28 AM Done Attachment PUNNETT SQUARES DOMINANT AND RECESSIVE ALLE

Question

Sprint LTE 10:28 AM Done Attachment PUNNETT SQUARES DOMINANT AND RECESSIVE ALLE LES IN THE BLUE-WINGED AND GOLDEN-WINGED WARBLER COMPLEX Blue-winged Warbler Golden-winged Warbler Lawrence's Warbler Brewster's Warbler Although the classic definition of a "species" emphasizes that different species are incapable of breeding with one another, in reality boundaries between species can be muddy. One of the more interesting examples relevant to Louisiana includes two species of birds, the Blue-winged Warbler and Golden-winged Warbler (pictured at top above). They may look quite different, but they actually interbreed regularly. Two of the hybrids they produce by doing so have earned their own names: Lawrence's and Brewster's Warblers (pictured on the second row The creation of a Brewster's or a Lawrence's Warbler requires receiving particular combinations of genes from the parents, with respect to throat color and underpart color. Underpart color has two alleles: white or yellow. White is dominant and yellow recessive, which means that if a bird gets a white underpart gene from one parent and a yellow gene from the other, the white allele will be what shows. The throat can be either plain(i.e., not black-so white or yellow; this is dominant) or black (recessive) Upper case letters will We will abbreviate the above alleles as follows. designate the dominant allele. W- white underparts

Explanation / Answer

Blue winged Warbler = Yellow underpart and plain throat,genotype is wwP-

Golden winged Warbler= White underpart and black throat, genotype is W-pp

Lawrence's Wabler=Yellow undserpart and black throat, genotype is wwpp

Brewster's Warbler=White underpart and plain throat, genotype is W-P-

Parents        pure blue winged      X            pure golden winged

Genotype     wwPP                                     WWpp

Gamets         wP                                        Wp

F1                                        WwPp

Phenotype                   White underpart and plain throat

                                          (Brewster's warblers)

F1 hybrids four alleles are W= White underpart

                                      w=Yellow underpart

                                       P=Plain throat

                                      p=Black throat

F1 hybrids underpart color is white and throat is plain.

Based on photos provided, common name given to this hybrid form is Brewsters warblers.

From Dad-->

    Mom |

WWPP

WWPp

WwPP

WwPp

Out of 16 offspring , 3 have appearance of blue winged warblers

Golden winged warblers are 3

Brewsters warblers are 9

Lawrence's warbler is 1

One warber is having pure blue winged genes(i.e wwPP)

One warbler is having pure golden winged gene ( i.e.WWpp)

From Dad-->

    Mom |

WP Wp wP wp WP

WWPP

WWPp WwPP WwPp Wp

WWPp

WWpp WwPp Wwpp wP

WwPP

WwpP wwPp wwPp wp

WwPp

WwPP wwPp wwpp

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.