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
OleMash [197]
2 years ago
7

In chickens, congenital baldness results from a Z-linked recessive gene. A bald rooster is mated with a normal hen. The Fi from

this corss are interbred to produce the F2.. The F2 progeny will include?
A. only normal roosters & hens

B. only bald roosters & hens

C. only normal roosters & bald hens

D. only bald roosters & normal hens

E. normal roosters & hens and bald roosters & hens
Biology
1 answer:
yanalaym [24]2 years ago
6 0

Answer:

<h2>E. normal roosters & hens and bald roosters & hens.</h2>

Explanation:

The sex chromosomes of the chickens are represented by ZZ for male chicken that is rooster and ZW for the female chicken that is hen.

In the given question, the genotype of the bald rooster is zz and the genotype of the normal hen is ZW.

So the F1 progeny are, Zz that is normal male and the zW that is bald female.

So F1 × F1

                        Zz × zW

Thus, F2 progeny are Zz ( normal rooster), zz ( bald rooster), ZW ( normal hen), zW ( bald hen).

             

You might be interested in
Given the Krebs cycle doesn't produce much ATP for the cell, what would you say is the main purpose of the Krebs cycle in cellul
Evgesh-ka [11]
The main purpose of Kreb's Cycle is to reduce the electron carriers: FADH2 and NADH. These electrons are then passed to the electron transport chain by these carriers to generate a concentration gradient of Hydrogen ions between the intermembrane space and matrix of the mitochondria. This drives ATP synthase where the actual majority of ATP is synthesized.
6 0
2 years ago
Your friend comes back from the doctor and says they have pulled their tibialis anterior. they know you are taking human body sy
levacccp [35]

Answer:

Anterior means front, and tibialis indicates the tibia bone, so the muscle is in the front of her tibia.

Explanation:

4 0
2 years ago
Whats worse than stepping on your pet accidentally?
SOVA2 [1]

Answer:

is it a question or a joke. LOL

Explanation:

Probably something like getting caught by your parents the minute you take your phone while they weren't seeing you when you studying until then.

Or say getting your little toe hit on the bed corner every single time.

:):);)

4 0
3 years ago
How does RNA leader sequence affect Trp operon syst
Luda [366]

Answer:

The base pairing of complementary regions of RNA leader sequence determines if the transcription will be attenuated at the end of leader sequence or will continue for structural genes.

Explanation:

The RNA leader sequence of trp operon is the site where the transcription is initiated.  

When tryptophan levels are high, translation of sequence 1 of the leader sequence is followed by base pairing between the complementary 3 and 4 regions of the leader sequence. The base pairing forms a terminator like attenuator and stops the expression of structural genes.  

When tryptophan is not present, ribosome pauses at tryptophan codon of region 1 of the leader sequence. Hence, the regions 2 and 3 of the leader sequence base pair and prevents the formation of attenuator by not allowing the region 3 to pair with region 4.  

3 0
3 years ago
SOMEONE PLZ HELP ME WITH THIS?!?!?
Studentka2010 [4]

Table 1:

17 protons and 17 electrons

78 protons and 78 electrons

32 protons and 18 electrons

38 protons and 36 electrons

13 protons and 13 electrons

15 protons and 18 electrons

14 protons and 14 electrons

Table 2:

Ba2+ ion

Radon

Polonium

Tin

Selenium

Cesium

Magnesium Ion

IT WAS SUPER TOUGH!!!

4 0
2 years ago
Read 2 more answers
Other questions:
  • What part of sharks are most consumed?
    8·1 answer
  • . Limb bones within unrelated animals that have the same basic structures are considered
    7·1 answer
  • How are scientific inferences drawn from observation?<br> provide an example.
    10·1 answer
  • Using the processes of diffusion and osmosis molecules(particles) always move from?
    14·2 answers
  • What are four things that typically become distorted in various projections?
    14·1 answer
  • Can some help please? Where, in the cell, does the process below occur?
    15·1 answer
  • 2. Explain why plates are moving?​
    12·1 answer
  • Use the diagram to answer the question .
    15·1 answer
  • The flow of information in a cell is
    6·1 answer
  • 5. Describe the different causes of climate change.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!