3 years ago

Difference between embryoblast and trophoblast

1 answer:

4 0

Answer:

The region where the embryoblast contacts the trophoblast is called the embryonic pole. ... Just before implantation, the cells in the embryoblast start to differentiate into two layers - the epiblast (primary ectoderm), and an internal layer of cuboidal cells called the hypoblast (or primary endoderm).

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Explain how you could determine wheater seeds in packets of round pea seeds have a genotype rr or rr

mezya [45]

I think you mean Round could be RR or Rr (round is dominant to wrinkled)
R=round
r=wrinkled
RR would be round phenotypically
Rr would be round phenotypically
To determine if they are RR or Rr you should perform a backcross with a wrinkled mutant!
I put a picture to demonstrate this.
If they are RR then if you cross with rr you would only get phenotypically Round pea plants.
If they are Rr then if you cross with rr you would get 50% round and 50% wrinkled. Any wrinkled? Definitely the heterozygote Rr!!

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3 years ago

Which phenotype matches each of these genotypes?

user100 [1]

Answer:

Explanation:

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A parent with freckles is crossed with a parent without freckles. The Punnett square shows the possible genotypes and phenotypes

nasty-shy [4]

Answer:

The likelihood of the offspring having freckles and not having freckles is the same.

Explanation:because

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3 years ago

The interactions between amino acids are major factors in determining the shape of a protein. These interactions can be affected

Bess [88]

Answer:

Several factors affect the shape of a protein mainly the pH and Temperature surrounding the protein. Changes or unfavourable pH and Temperature could result into protein denaturation

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GIVING BRAINLIEST, FIVE STARS AND THANKS TO BEST ANSWER. PLZ AND THANK YOU! HAVE A GREAT DAY/NIGHT! <3 :3 :D

Ilia_Sergeevich [38]

Answer:

Male cones are a lot smaller than female cones and their scales aren't as open. Each scale in a male cone contains the pollen that can spread to a female cone to make a seed.

Explanation:

I don't know what you are asking but that is my answer.....be more specific.

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