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
Tomtit [17]
3 years ago
6

Which form of a gene controls a trait?

Biology
2 answers:
wlad13 [49]3 years ago
5 0

Answer:Dominant allele

Explanation:

Trava [24]3 years ago
4 0

Answer:Dominant allele

Explanation:

You might be interested in
People who tend to gain weight in the hip area have a higher incidence of coronary heart disease than those people who gain weig
chubhunter [2.5K]
 People<span> who </span>tend<span> to </span>gain weight<span> in the </span>hip area have<span> a </span>higher incidence<span> of </span>coronary heart disease<span> wham do </span>people<span> who </span>gain weight<span> in the</span>abdominal area<span>. False.</span>
8 0
3 years ago
16. Refer to the illustration above. Which of the following correctly indicates the order in which these events occur?
Stolb23 [73]

Answer:

b. "C" “B” “A,” “D”

Explanation:

C is prophase because the nuclear envelope starts to disappear and the centrosomes divide

B is metaphase because chromosomes line up to form the equatorial plate

A is anaphase because the sister chromatids are separated

D is telophase because new nuclei form around the separated genetic material

3 0
3 years ago
Briefly describe how amniocentesis and chorionic villi sampling are used in genetic screening.
bearhunter [10]

Answer:

Amniocentesis is an invasive method that involves the aspiration of 10-20 ml of fetal water through the abdominal wall under ultrasound-guided control. In most cases, the procedure is performed around the 16th week of gestation. The fetal water sample contains fetal cells, mostly cells of fetal skin and the epithelium of the urinary tract.

Chorionic Villus Sampling (CVS) biopsy is performed between weeks 11 and 12 of gestation. During biopsy, with ultrasound guidance, the tissue of the chorionic fossa is aspirated mainly across the abdomen (transabdominal pathway). The biopsy specimen is of fetal origin and belongs to the outer layer of blastocyst cells or the trophoblast (outer layer of the placenta). Very often, the biopsy specimen contains tissue of the decidua (mucous membrane of the uterus) that is of maternal origin, and it is necessary to remove the maternal tissue before any treatment of the sample.

Explanation:

The amniocentesis procedure carries a risk of miscarriage of 0.5-1%.  After aspiration of the fruit of the water, the sample is centrifuged to separate the cells from the amniotic fluid. Separate cells are seeded on a nutrient medium (cell culture) that stimulates cell growth. After about 14 days, the cell culture is further used for various genetic or biochemical analyzes such as karyotyping.

The advantage of chorionic biopsy is the amount of biological material, which is sufficient for the whole a number of different laboratory procedures. Also, a great advantage is the timing of the procedure as it allows diagnosis in the first trimester of pregnancy, but the chorionic biopsy procedure itself carries a risk of miscarriage of 1-2%.

3 0
3 years ago
Which organelle is most like a factory delivery driver?.
pogonyaev
Endoplasmic reticulum
5 0
3 years ago
Read 2 more answers
Identify two means by which meiosis results in genetically unique gametes, and explain why this is important.
Rashid [163]

Explanation:

Meiosis is beneficial as it produces gametes that are genetically different to the parent cell, and when the gametes combine the offspring produced is made from combination of genes from both mother and father. The offspring is genetically unique, there is no other organism on the Earth with the exact same DNA sequences on their chromosomes.

8 0
2 years ago
Other questions:
  • Describe two differences between b cells and t cells.
    13·1 answer
  • The climate of a city situated high in the mountains of the middle latitudes would, according to Köppen, be classified as
    9·1 answer
  • Are all mixtures solutions? Are all mixture? Give an example
    11·1 answer
  • The kinetic energy of an object depends on which of the following?
    10·2 answers
  • Which of these occurs first?
    6·1 answer
  • Morgan obtains a score on a screening device for depression, which indicates the presence of significant depression. Morgan's ps
    6·1 answer
  • Competition, a type of symbiotic relationship, is where neither species benefits neither species benefits nor is harmed one spec
    7·1 answer
  • Which of the following lists the steps an igneous rock undergoes in order to become a sedimentary rock, in the
    8·1 answer
  • A variety of opium poppy (Papaver somniferum L.) having lacerated leaves was crossed with a variety that has normal leaves. All
    9·1 answer
  • What is a microsphere?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!