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
VashaNatasha [74]
3 years ago
13

Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of deafness. Deafness is a recessive trait tha

t is associated with the abnormal allele d. The normal allele at this locus, associated with normal hearing, is D. Dr. Smith's parents could have which of the following genotypes?
a. DD and dd
b. dd and dd
c. DD and DD
d. Dd and DD

Biology
1 answer:
earnstyle [38]3 years ago
4 0

The options are incomplete and have been listed incorrectly. Complete question has been attached.

Answer:

C) Dd and Dd

Explanation:

It is given that deafness is a recessive trait which means that Dr. Smith has genotype dd since a recessive trait can only be expressed when both the alleles in genotype are recessive. However, his parents are normal. So his parents can have DD or Dd genotype. Dr. Smith has obtained one recessive d allele from his father and other recessive d allele from his mother. Thus, the parents should have Dd genotype and the correct option is c.

You might be interested in
Kevelyn dreams that 12 monkeys are dancing in a circle around her while she sits on a stool and eats a banana. This description
Volgvan

Its probably B, as latent dreams are influenced by previous experiences and actions, and usually has a meaning. If not, its possibly D.

I hope my answer helps with this weird question lol

8 0
3 years ago
Name the organs in the lymphatic system and for each one describe what it does
IRISSAK [1]
Thymus is made up of two lines of lymphoid tissue, each line has a medulla surrounded by a vortex where immature lymphocytes first go to become T cells, but their maturation finishes in the medulla.
The spleen filters blood, removing old damaged red blood cells which are phagocytize by macrophages.
The tonsils help fight infections but removing
The appendix doesn’t have much of function but does release mucus into the large intestine.
5 0
3 years ago
An experimenter has altered the 3' end of the tRNA corresponding to the amino acid methionine in such a way as to remove the 3'
marysya [2.9K]

Answer:

C) The amino acid methionine will not bind.

Explanation:

The tRNA has a nucleotide sequence that varies in length from 73 to 93 nucleotides. The 3' end of the tRNA serves as an amino acid arm. All the tRNA molecules have the trinucleotide sequence CCA at the 3' end. The base "A" is present at the 3' end. The amino acid arm serves to carry a specific amino acid according to the anticodon sequence present in its anticodon arm.

The amino acid is esterified by its carboxyl group to the 2'- or 3'-hydroxyl group of the adenine residue that is present at the 3' end of the tRNA. Therefore, the removal of 3' AC would not allow the tRNA to bind to its corresponding amino acid (here, methionine).

6 0
3 years ago
What formed element in the blood is responsible for attacking pathogens?
mixer [17]
<span>haemoglobin. hope this helps!
</span>
4 0
4 years ago
A plant that produces wrinkled, green seeds was mated to a plant that produces phenotypically round, yellow seeds. In the F1 gen
wel

Answer:

3/16

Explanation:

Doing a Punnett sqare (or several), we can get in the f1 1/4 of seed will be genotypically identical.   Doing another Punnett square for F2, we can get 3/16

8 0
4 years ago
Other questions:
  • Which best describes the relationship of the embryo and the fetus.
    8·1 answer
  • In which stage of cell division is the dna copied?
    9·1 answer
  • Whole-genome sequencing can be used for advances in:
    11·1 answer
  • The caribbean species and the pacific species look very similar. the researchers investigated mating in the lab and found that m
    14·1 answer
  • Please help! 20 points!
    11·2 answers
  • What is the next step in the scientific method following stating a question
    15·2 answers
  • Which of the following statements is the most correct regarding homeostatic imbalance? A. It is considered the cause of most dis
    10·1 answer
  • Compare and contrast the two types of bonds
    15·1 answer
  • Are there any parts of the human body that get oxygen directly from the air and not from the blood?
    6·1 answer
  • What could be the caused of hydronephrosis?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!