subject
Biology, 17.11.2020 17:40 Wolfgirl2032

Drosophila melanogaster (D. melanogaster) is a species of fruit fly frequently used by researchers in genetic studies. Members of this species have two of each of four different chromosomes: the sex chromosome (flies have X and Y) and three autosomes (chromosomes 2, 3, and 4). Researchers studying D. melanogaster conducted genetic crosses to investigate a particular X-linked recessive trait encoded by a single gene (Table 1). Affected flies have the trait. (a) Identify the genotypes of the male and female flies used in cross 2.

(b) Identify the cross in which the female parent was most likely heterozygous.

(c) The researchers hypothesize that crossing any unaffected female and an affected male will result in a 0% chance of producing an affected male offspring. Evaluate the validity of the hypothesis.

(d) Explain how the results exclude the possibility that the trait is encoded by a mitochondrial gene.

ansver
Answers: 2

Other questions on the subject: Biology

image
Biology, 21.06.2019 17:30, 365371
Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.
Answers: 1
image
Biology, 22.06.2019 05:10, yessijessiHaley
What is the cause hearing loss in human being
Answers: 2
image
Biology, 22.06.2019 07:00, fitzsimmonssheovgrbh
Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms
Answers: 2
image
Biology, 22.06.2019 13:00, ian1588
True or false multiple lane changes must be done individually going through the same procedures for each lane change
Answers: 1
You know the right answer?
Drosophila melanogaster (D. melanogaster) is a species of fruit fly frequently used by researchers i...

Questions in other subjects: