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
Ipatiy [6.2K]
3 years ago
8

Two humans mate who are heterozygous for earlobe shape where attached earlobes (A) are dominant to free earlobes (a), and earwax

quality where dry earwax (e) is recessive to wet earwax (E ). What is the probability that their first child will have dry earwax and attached earlobes
Biology
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

3/16

Explanation:

This question involves two different genes coding for earlobe shape and earwax quality. The alleles for attached earlobes (A) and wet earwax (E) are dominant over the alleles for free earlobes (a) and dry earwax (e).

According to this question, two humans mate who are heterozygous for both genes i.e. AaEe × AeEe. Each parent will produce the following gametes: AE, Ae, aE, ae.

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

* Attached earlobe, wet earwax (A_E_) = 9/16

* Attached earlobe, dry earwax (A_ee) = 3/16

* Free earlobe, wet earwax (aaE_) = 3/16

* Free earlobe, dry earwax (aaee) = 1/16

Hence, the probability of these parents having their first child with dry earwax (ee) and attached earlobes (A_) i.e. genotype A_ee is 3/16.

You might be interested in
I do this work negative​
skad [1K]

Answer:

what?

Explanation:

i dint get it is there a joke or somthing

5 0
3 years ago
Which of the following is not true concerning the flow of energy through an ecosystem? a. Most solar energy is used in photosynt
sleet_krkn [62]

Answer;

D. Most of the energy from photosynthesis flows out as heat

Explanation;

Energy flow is the amount of energy that moves through a food chain in a given ecosystem.

Producers such as green plants in a ecosystem convert energy from the the sun into carbon bonds, such as those found in the sugar glucose through the process of photosynthesis.

The amount of chemical energy storied as nutrients in the bodies and wastes of organisms flows through ecosystems from one trophic level to the next and through this flow energy also is lost as heat. And the chemical energy available to the succeeding feeding level decreases.

7 0
3 years ago
Read 2 more answers
Identify the structures of the heart.
tensa zangetsu [6.8K]

Answer:

A- pulmonary valve

B- tricuspid valve

C- septum

D- bicuspid valve

E- aortic valve

F- aorta

7 0
3 years ago
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
ankoles [38]

Answer:

The Cornea

Explanation:

The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours.

3 0
3 years ago
Read 2 more answers
List several functions of G protein-coupled receptors
Ksivusya [100]

Answer:

A novel GPCR role in regulating cell density sensing. Homeostasis modulation (e.g., water balance). Involved in growth and metastasis of some types of tumors. Used in the endocrine system for peptide and amino-acid derivative hormones that bind to GCPRs on the cell membrane of a target cell.

4 0
2 years ago
Other questions:
  • Lucia is given a picture of several cells. Her task is to identify the cells as plant or animal cells. How can she pinpoint the
    8·2 answers
  • Which phase of the moon follows the first quarter moon?
    11·1 answer
  • The annual hot dog eating contest at the fair gives a $100 prize to the contestant who eats 30 hot dogs in the least time. If al
    15·1 answer
  • Why protonephridia are termed as flame cells?
    6·1 answer
  • Which of the following statements about viruses is FALSE? Which of the following statements about viruses is FALSE? Viruses cont
    7·1 answer
  • Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of
    12·1 answer
  • How are the processes of photosynthesis and cellular respiration related to one another
    7·1 answer
  • Storz (2007) describes an adaptive response to low partial pressure of oxygen in an environment at high elevation. Describe thre
    6·1 answer
  • What is the function of an organ system?
    9·2 answers
  • Question 5 of 25
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!