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
a_sh-v [17]
3 years ago
5

Triple X syndrome, or trisomy X, occurs when a female has an extra X chromosome in each of her cells. This results when the moth

er's reproductive cells divide improperly, and two X chromosome are moved into one gamete. When that gamete is fertilized and the father's DNA and X chromosome are combined with the mother's, that gives the cell three X chromosomes instead of two. Triple X syndrome occurs because of...
A) Crossing over
B) Nondisjunctions
C) Point mutations
D) Deletions
Biology
2 answers:
almond37 [142]3 years ago
6 0

Answer: B) Nondisjunction.

Explanation: Syndromes such as triple X syndrome, Turner's syndrome, Down syndrome, and Klinefelter's syndrome occur because of nondisjunction, or the improper separation of the chromosomes during division. In each of these cases, an extra chromosome (X chromosome for triple X, chromosome 21 for Down syndrome, etc.) causes symptoms in the offspring. In some syndromes, such as triple X syndrome, the symptoms are often not very noticeable.

Kisachek [45]3 years ago
5 0
The answer is b, non-disjunction
You might be interested in
When inhaled, crystalline silica can cause scar tissue to form on what organs?
Elina [12.6K]
This can cause scar tissue on the..
b.) heart. 

Good Luck! :)
6 0
3 years ago
Read 2 more answers
Whats the right answer?
Tasya [4]

Answer:

The answer is C

Explanation:

Mitosis replaces body cells, Meiosis deals with gamete cells

6 0
3 years ago
Which of the following describes describes a response to external stimuli?
Natali5045456 [20]

The answer is A because the subject is responding to something that is going on outside of it, if that makes any sense :)

Hope this helps! Have a great day!

8 0
3 years ago
PLS HELP ME
shepuryov [24]

Answer:

a 25%

Explanation:

the white flower is the heterogeneous offspring and there is only 1 white so 100÷4 =25

6 0
3 years ago
Explain incomplete dominance, using snapdragon<br> flowers as an example.
oee [108]

Answer:

Dominant allele does not completely conceal recessive allele.

Snapdragon with genotype Rr (R being red and r being white), would have a phenotype of pink flowers.

Explanation:

Incomplete dominance is where a dominant allele is not able to completely conceal a recessive allele, usually leading to a phenotype which appears to be a combination of the two.

For example, in snapdragons:

The allele for red flowers (R) is dominant over the allele for white flowers (r). Let's say a snapdragon flower had the genotype Rr, one allele for red flowers and one for white. In the case of 'normal' dominance the dominant red flower allele (R) would mask the effects of the recessive white flower allele (r), resulting in the phenotype (outward observable characteristics) of having red flowers.

However here in the case of incomplete dominance, the dominant allele would not be able to fully cover up the effects of the white flower allele, meaning that both colors (red and white) are expressed in the phenotype, resulting in pink flowers.

Hope this helped!

5 0
3 years ago
Read 2 more answers
Other questions:
  • What are 2 ways that organisms are connected to the nonliving environment
    5·1 answer
  • ~PLEASE HELPP~ Burning fossil fuels causes a movement of carbon from the
    8·2 answers
  • The Monarch butterfly feeds on milk-weed to obtain nectar. While visiting the flower, the butterfly may incidentally pick up pol
    5·1 answer
  • SO, I had a dream i was at a family gathering at my grandma's house. And there was a fat bald guy named Derrek. This derek guy t
    6·2 answers
  • The variety of organisms within an ecosystem is characteristic of which type of diversity?
    14·1 answer
  • In most medical procedures, hazardous waste is produced. This waste is usually burned, which can release chemicals like lead int
    6·2 answers
  • What is the name of a syndrome that is the result of a defective protein
    7·1 answer
  • Which of the following is a producer in this food web? <br> eggs <br> algae<br> worms
    5·1 answer
  • What adaptations did Charles Darwin notice in the finches of the Galapagos Islands that helped him develop his theory of evoluti
    12·1 answer
  • Why are most leaves shaped the way they are?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!