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Dimas [21]
3 years ago
9

In figure 1, starting from the left, what magnetic poles are shown on the two bar magnets?

Biology
2 answers:
Bogdan [553]3 years ago
3 0
Well, after seeing the figure, and starting from the left the magnetic poles are shown like NORTH, SOUTH NORTH, SOUTH. so your option will be the first one
gladu [14]3 years ago
3 0

Answer:

A - North South North South

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3 years ago
What gametes are produced by the following organisms:_______.
vova2212 [387]

Answer:

The correct answer would be -

1- YR, Yr, yR and yr.

2. Yr, yR

3. YR, yr

4. YR, Yr, yR & yr

Explanation:

A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.

The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.

1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.

2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.

3).  if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.

4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.

3 0
2 years ago
The circular folds of the small intestine enhance absorption by causing the chyme to spiral, rather than to move in a straight l
Pavlova-9 [17]

Answer:

The correct answer will be- true.

Explanation:

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The structure of small intestine contains cell membrane extensions called villi and micro-villi which increases the surface area for absorption. The small intestine increases the food absorption by peristaltic movement of the food chyme. The small intestine causes the food chyme to form spirals which passes the food to large intestine.

Thus, true is the correct answer.

8 0
2 years ago
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