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djyliett [7]
3 years ago
8

Stem cells that will form b cells or nk cells are found only in the

Biology
1 answer:
ArbitrLikvidat [17]3 years ago
3 0
<span>Stem cells develop into different types of cells as an organism grows. They also act as internal repair systems. They divide without limit so as to replenish other types of cells as long as the concerned organism is still alive. Stem cells that develop to form either B cells or NK cells are normally found in the bone marrow.</span>
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Using Punnett Squares, determine the percentage of offspring which would be heterozygous from the following cross: BB x bb
gogolik [260]

Lets take that the father has black hair and the mother has brown hair so -->

Male × Female

Genotypes: BB × bb

Phenotypes: Black brown

Gametes: B _100%_ b_100%_

After reviewing the photo

we have

Genotypes

B: 50% (1/2)

b: 50% (1/2)

Phenotypes

Black: 50% (1/2)

brown: 50% (1/2)

6 0
2 years ago
Gene flow or migration is the transfer of alleles or genes from one population to another. Select the combination of facts that
Artemon [7]

Answer:

B is the right option: I. and III.

Explanation:

In the Fugate family, four children out of seven had a blue complexion. This means that four children expressing such genes that cause blue complexion. These traits are not very common means the family has some hereditary background. According to the doctor, the occurrence of the condition is rarely seen that explains blue complexion does not appear due to environmental change or traveling.

6 0
3 years ago
Read 2 more answers
Suppose that when you examined your tubes (in this exercise) after incubating them, you noticed that the unsealed control contai
aivan3 [116]
The Oxidation-Fermentation Test is used to differentiate bacteria built on their capability to oxidize or ferment specific sugars.
Once microbes are inoculated,-One tube is sealed with a layer of sterile mineral oil to promote anaerobic growth and fermentation.-The other tube is left unsealed to allow aerobic growth and oxidation.
Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate will turn the sealed and unsealed yellow throughout.
Organisms able only to oxidize the sugar will turn the unsealed yellow medium and leave the sealed medium green or blue.
Fragile fermenters will convert both tubes slightly yellow at the top.
Organisms not able to metabolize the sugar will either produce no color change or will turn the medium blue due to alkaline products from amino acids degradation.
Since Pair #1 showed complete yellowing for sealed and unsealed, these Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate. So our interpretation will be that the organism has: Oxidation and fermentation OR fermentation only.
For tubes #2 and #3, the sealed tubes were green throughout suggests that they need oxygen for aerobic growth, and the fact that their unsealed tubes showed light yellowing is evidence for oxidation. Sealed - Green and Unseal - Yellow. Our interpretation for these pairs of tubes would be : Oxidation
Tube 1 can be either Oxidation and fermentation OR fermentation only. So reliability of this needs to be confirmed more with additional testing.
Tubes 2 and 3 are most reliable because they can only be oxidation only and no fermentation.
6 0
3 years ago
All cells are surrounded by a membrane.
gayaneshka [121]

Answer:

it's semipermeable

Explanation:

7 0
3 years ago
Is the Sun a planet? Why or why not? (3-4 sentences)
Molodets [167]

Answer:

No

Explanation:

The Sun is a star there are lots of stars,but the Sun is the closest one to Earth.It made from gases and it always burning

Planets are:Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus

4 0
2 years ago
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