A female Drak that is homozygous recessive for red eyes and homozygous dominant for purple scales and fire-spitting is crossed to a male Drak that is heterozygous for black eyes (B), purple scales (Q), and fire-spitting (F). Calculate the distance between the F and B loci (rounded to the tenths), including the units. Chromosome B Q F 12 B Q f 43 B q F 78 B q f 554 b Q F 478 b Q f 65 b q F 52 b q f 9
Added by Elizabeth I.
Close
Step 1
The female Drak is homozygous recessive for red eyes (ff) and homozygous dominant for purple scales and fire-spitting (BB). The male Drak is heterozygous for black eyes (Bb), purple scales (BB), and fire-spitting (BB). Show more…
Show all steps
Your feedback will help us improve your experience
Shaiju T and 57 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
6. A female fly with vermillion eyes was crossed with a male with red eyes. The following F1 progeny were produced: All red-eyed females All vermillion-eyed males a. Vermillion eye color is most likely an __ trait. (put an X by the correct answer) autosomal X-linked b. Vermillion eye color is __. (put an X by the correct answer) dominant recessive c. If one of the F1 red-eyed females is crossed with one of her vermillion-eyed brothers, what phenotypes would you expect to see in the offspring and in what proportion? Females: Males: d. Assign symbols for the vermillion and red eye alleles, and then fill in the Punnett square to show how you got your answer to part c. Vermillion allele: Red allele:
Bryan V.
You conduct the following cross using red eyed white eyed mutant Drosophila: P: Xw+/Xw x Xw+/Y a. What genotypic and phenotypic proportions do you expect in the F1 b. The female flies in the F1 may be homo- or heterozygous red. In order to distinguish between both genotypes, you cross each F1 female with a white eyed male and raise 5 offspring from each cross. What is your probability of misclassifying a heterozygous F1 female as a homozygous F1 female?
Anand J.
With reference to the eye color phenotypes produced by the recessive, autosomal, unlinked brown and scarlet loci in Drosophila (see Figure $4-10$ ), predict the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ results of the following $\mathrm{P}_{1}$ crosses. (Recall that when both the brown and scarlet alleles are homozygous, no pigment is produced, and the eyes are white.) (a) wild type $x$ white (b) wild type $\times$ scarlet (c) brown $\times$ white
Khalida D.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD