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QveST [7]
2 years ago
12

Evidence of a chemical change can be observed when-

Biology
1 answer:
xeze [42]2 years ago
4 0

Answer:

A. a solid melts into a liquid

Explanation:

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What is the ONLY organ located in the region (umbilical)?
Vitek1552 [10]

Answer:

small intestine

Explanation:

Umbilical. The umbilical region contains the umbilicus (navel), and many parts of the small intestine, such as part of the duodenum, the jejunum, and the illeum. It also contains the transverse colon (the section between the ascending and descending colons) and the bottom portions of both the left and right kidney.

6 0
2 years ago
a. What do the letters R and I represent ? b. What is the genotype of the pink-flowered snapdragons? c. Explain whether the alle
-Dominant- [34]

Answer:

a) R= allele for red colored flower

I= Allele for ivory flowers

b) Genotype of pink flowered plant: RI

c) Incomplete dominance

d) 100%

Explanation:

When the dominant allele is not able to fully mask the expression of the recessive allele in the heterozygous state, it is said to be incomplete dominance. The R and I alleles impart red and ivory color respectively to the flowers of the snapdragon plant. The heterozygous genotype "RI" imparts a pink color to the flowers and therefore, the alleles are said to exhibit incomplete dominance.

The genotype of red-flowered snapdragon plant = RR. The genotype of ivory flowered snapdragon plant= II. When a red-flowered snapdragon plant is crossed with an ivory flowered snapdragon plant, the progeny is heterozygous in nature with the "RI" genotype. The phenotype of the progeny is "Pink flower" since the R allele is incompletely dominant over the allele I.

5 0
3 years ago
Which statement describes the law of superposition?
gregori [183]

-Each layer is younger than the one below it.

5 0
3 years ago
Read 2 more answers
What is the term for the photopigment present in rod cells?
s2008m [1.1K]

Answer:

Rhodopsin is the photopigment in rods.

3 0
2 years ago
Explain how human embryonic stem cells, adult stem cells, and skin cells taken from the same person would be the same and how th
Makovka662 [10]

Answer:

There would be many differences as well as many similarities between these cells.

Similarities: All these cells will have the same DNA, the same chromosomes. The organelles in the cells would be the same.

Differences:

Embryonic cells  are totipotent. They have the capability to divide into every cell of the body.

Adult stem cells are pluripotent. They have the ability of divide into some different types of cells.

Skin cells can only divide into skin cells.

4 0
2 years ago
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