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
Inga [223]
3 years ago
15

n cattle, an autosomal mutation called Dexter produces calves with short stature and short limbs. Embryos that are homozygous fo

r the Dexter mutation have severely stunted development and either spontaneously abort or are stillborn. In addition roan cattle are the heterozygous hybrids of a cross between a white individual and a red individual. What progeny phenotypes do you expect from the cross of a roan Dexter cow to a roan Dexter bull

Biology
1 answer:
timofeeve [1]3 years ago
5 0

Answer:

1 DDRR - Red, non-dexter

2 DDRr - Roan, non-dexter

2 DdRR - Red, dexter

4 DdRr - Roan, dexter

1 DDrr - white, non-dexter

2 Ddrr - white, dexter

Explanation:

Dexter is deleterious in homozygous condition, hence, phenotypes are heterozygous.

Roan are also heterozygous.

If dexter allele is represented by D, non dexter individuals will be DD dexter individuals will have the genotype Dd.

If colour in cattle is represented by R, red individuals will be RR, white will be rr, then roan colour will be Rr.

Hence, roan dexter cow and roan dexter bull will both have DdRr genotypes.

Crossing the two:    DdRr   x   DdRr

Progeny:

1 DDRR - Red, non-dexter

2 DDRr - Roan, non-dexter

2 DdRR - Red, dexter

4 DdRr - Roan, dexter

1 DDrr - white, non-dexter

2 Ddrr - white, dexter

<em>Others that are either aborted or stillbirths include:</em>

<em>1 ddRR </em>

<em>2 ddRr </em>

<em>1 ddrr</em>

You might be interested in
perkembangbiakan generatif pada tumbuhan adalah terjadinya tumbuhan baru yang didahului dengan proses
densk [106]
listen I'm only in 5th grade it's not know the answer to this how are you supposed to just be asking question like this what is this even meaning
8 0
3 years ago
A college's nursing program has added an elective in forensic nursing to the curriculum. Which phenomenon underlies the expanded
CaHeK987 [17]

Answer:

<em>The fact that there are high rates of mental illness among the populations of jails and prisons</em>

Explanation:

A forensic nurse can be described as a nurse who works with the crime victims. Forensic nurses provide health care to in the scientific investigations of trauma, violence or any other criminal activity.

Hence, introduction of the forensic nursing course in the nursing program is an important initiative for working with mentally ill patients on any jail or prison.

6 0
3 years ago
In addition to generating reducing power (i.e., NADPH) for biosynthesis, the pentose phosphate pathway also provides precursors
Bess [88]

Answer:D

Explanation:

Nucleic acid

5 0
2 years ago
Read 2 more answers
What role do other human body systems, such as the digestive system, the integumentary system, and the respiratory system play i
Yakvenalex [24]
Respiratory system helps in breathing and it leads to exhalation of the gas carbon dioxide which is not required by the body. The integumentary system is the first line of defense and protects the body from invadig microbes, dust, and other harmful substances. The digestive system protects the body by enabling digestio of food and providing energy to sustain, further the toxic waste materials are also released during the process. 
7 0
3 years ago
Question 3<br> Contaminants and pollutants cannot enter groundwater<br> O True<br> O False
Gala2k [10]

Answer:

false

Explanation:

groundwater groundwater has an abundance of contaminants and pollutants

7 0
2 years ago
Other questions:
  • Action: Increasing the amount of oxygen in the water
    15·1 answer
  • Describe the food chain plant&amp; grasshopper snake _______<br>​
    7·1 answer
  • The reasons why people leave certain locations are known as
    10·1 answer
  • Which of the following does NOT occur during mitosis? a) Centromeres split, b) chromosomes replicate, or c) spindles form?
    14·1 answer
  • Question is inside the image below.
    11·1 answer
  • PLZ HELP I'M NOT TRYING TO GO TO SUMMER SCHOOL I WILL BRAINLIST YOU
    7·1 answer
  • Ill give you 100 points and brainliest
    14·2 answers
  • HELP FAST PLZ TAKJNG A TEST !!!!!! Will give Brainly and 30 points !!
    7·2 answers
  • a person taking a glucose test is usually told to fast prior to the test. why would fasting be necessary?
    13·1 answer
  • When the resident microbiota prevents the establishment of a pathogen, it is called _______.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!