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Ksivusya [100]
3 years ago
13

A phenotypically normal couple has a colorblind klinefelter son (xxy). In which parent and at what meiotic stage must the non-di

sjunction event have occurred?
a. Meiosis i of mother
b. Meiosis i of father
c. Meiosis ii of father
d. Meiosis ii of mother
e. Meiosis i or ii of mother f. Meiosis i or ii of father
Biology
1 answer:
ad-work [718]3 years ago
4 0

Answer;

D. Meiosis ii of mother

Explanation;

-The non-disjunction occurs in the meiosis II of the mother. This non-disjunction occurs when the two sister chromatids X and X fails to separate during meiosis II and produces an egg having two X chromosomes.

-Klinefelter syndrome is a condition that occurs in males when they have an extra X chromosome. The syndrome is not inherited, but usually occurs as a random event during the formation of reproductive cells (eggs and sperm) that results in the presence of one extra copy of the X chromosome in each cell (47,XXY).

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scoundrel [369]

B) The mutation is beneficial and allows those who have it to reproduce more than average.


If the mutation is beneficial, it will become common in a population since the individual(s) that have this beneficial mutation will survive longer to produce more offspring that have this mutation. These offspring will also live longer and spread this mutation through the gene pool through reproduction.


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3 0
2 years ago
Read 2 more answers
How accurate is DNA and fingerprint technology, and when did it emerge? What level of human error still plays a role in this typ
Firdavs [7]

Answer:

DNA and fingerprint technology is said to be very accurate as it uses chemicals to separate strands of your own unique DNA to reveal the unique parts of your genome. which is your genetic make-up

This technology emerged in 1984 and invented by Professor Sir Alec Jeffreys who realized that you could detect variations in human DNA, in the form of these mini-satellites to produce a pattern unique to an individual

Human error still plays a role in terms of lab staff who make errors in conducting the DNA analysis, interpreting it or reporting the results of the analysis sometimes it occurs in entering the resulting DNA profile into a DNA database system which may result from a failure to comply a procedure, misjudgement, or some other mistake. There are protocols and precautions which can be introduced to minimise the opportunity for error during analysis or interpretation, however, the potential for human error cannot be fully eliminated.

4 0
2 years ago
Which statement describes the structure of lipids?
iren2701 [21]

Answer:

composed of a glycerol molecule binded to fatty acid molecules

Explanation:

6 0
2 years ago
What distance would be covered in 10
Brrunno [24]

Answer:

The correct answer would be - 5000 meter or 5 kilometers

Explanation:

Given:

Speed = 500 meter/minute

Time = 10 minutes

Distance would be covered = ?

Formula used:

speed = distance/ time

then, Distance = speed*time

Solution:

Putting values in the provided formula:

Distance = speed*time

distance = 500*10 meters

              = 5000 meters or 5 kilometer (1000 meter = 1 kilometer)

6 0
3 years ago
What is vena cava<br>hello didi and twinkle. ​<br>yeha aavo
ludmilkaskok [199]

Answer:

(VEE-nuh KAY-vuh) A large vein that carries blood to the heart from other areas of the body. The vena cava has two parts: the superior vena cava and the inferior vena cava. The superior vena cava carries blood from the head, neck, arms, and chest.

8 0
2 years ago
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