1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Colt1911 [192]
3 years ago
8

n Drosophila melanogaster, forked bristles are caused by an allele (Xf) that is X linked and recessive to an allele for normal b

ristles (X+). Brown eyes are caused by an allele (b) that is autosomal and recessive to an allele for red eyes (b+). A female fly that is homozygous for normal bristles and red eyes mates with a male fly that has forked bristles and brown eyes. The F1 are intercrossed to produce the F2. What will the proportions of the F2 flies be (male with red eyes and forked bristles) from the cross?
Biology
1 answer:
makkiz [27]3 years ago
6 0

Answer:

Proportion of the F2 male with red eyes and forked bristle will be 1/4

Explanation:

forked bristles are caused by an allele (Xf) that is X linked and recessive to an allele for normal bristles (X+).

Brown eyes are caused by an allele (b) that is autosomal and recessive to an allele for red eyes (b+)

A female fly that is homozygous for normal bristles and red eyes mates with a male fly that has forked bristles and brown eyes

    X+X+b+b+  x    Xfbb

the F1 gives   1/2X+Xf 1/2b+b

                      1/2X+Y  1/2b+b

intercross of F1

      Proportion of the F2 male with red eyes and forked bristle will be

      forked bristle= Xfy = 1/2 and for red eyes  2/4= 1/2  = 1/2x1/2 =1/4

You might be interested in
Who first called animal-like protists "animalcules" after examining a drop of pond water under a microscope?
Nonamiya [84]
The answer is Anton Von Leeuwenhoek
8 0
4 years ago
Read 2 more answers
Nephrons are the functional cells of the urinary system. They take in blood, metabolize nutrients, and help filter out waste pro
Andrews [41]

Answer:

Kidney

Explanation:

Nephron is the basic unit of structure in the kidney

3 0
3 years ago
Read 2 more answers
*100 points* *Giving brainiest*
e-lub [12.9K]

Answer:

what do you have do in this question bro

Explanation:

I will help you do it

8 0
3 years ago
Read 2 more answers
What is the purpose of meiosis? What type of cell is created (list all the scientific names)?
Akimi4 [234]

Meiosis is when two parent cells give birth to two sister cells.

The cell that is created is a sister cell.

-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-

Hope this helped you.

-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-

···· CatalHoyuk ····

6 0
3 years ago
If you monitored energy allocation in an adult penguin for just a few months instead of an entire year, you might find the growt
Dmitrij [34]
<h2>Energy allocation in penguin</h2>

Explanation:

  • Although penguins don't grow from year to year, they increase and decrease in size as they repeatedly form and use energy stores,a significant amount of energy might be stored in fat during part of the year but be missing from the pie chart because it is used later in the year  
  • Allocation of limited endogenous resources causes trade-offs between competing traits, such as reproduction, somatic growth and maintenance
  • During food deprivation, animals cannot maximize all of their life-history traits and must exhibit adaptive behavioral, physiological and biochemical responses to reduce metabolism and/or the cost of current activities in order to maintain biological value

7 0
3 years ago
Other questions:
  • Desert rabbits are adapted to the warm climate because their large ears aid in the removal of heat due to the
    8·1 answer
  • A neurotransmitter that is important in muscle contraction is
    12·2 answers
  • A group of one kind of organism living in an area?
    13·2 answers
  • What is the only reasonable and ethical way to achieve zero population growth
    5·1 answer
  • The term alternative energy best discibes?
    15·1 answer
  • The group in an experiment on which the critical part of the experiment is performed is the ___.
    10·1 answer
  • What are some similarities and differences between a pig and a frog?
    10·1 answer
  • Label the parts 1,2,3 etc.
    15·1 answer
  • Which observations support the student's claim that the<br> log represents a microhabitat?
    6·1 answer
  • What is the best evidence to prove that Irene was heterozygous for hemophilia?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!