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joja [24]
2 years ago
12

Soil nutrients are important to photosynthesis because they_____.

Biology
1 answer:
VLD [36.1K]2 years ago
6 0

Soil nutrients are important to photosynthesis because they <u>help with chlorophyll </u><u>formation</u><u>.</u>

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8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
devlian [24]

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

<u>Bb X Bb cross </u>

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

<u>Genotypes</u>:  

  • Bb, 50%
  • BB, 25%
  • bb, 25%

<u>Phenotypes</u>:

  • Brown feathers, 75%
  • Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

3 0
3 years ago
Multiple choice<br> Normal human gametes are:<br> A)diploid B)haploid C) autosomes D) Barr bodies
horsena [70]

The answer is B) Haploid

7 0
3 years ago
Which disorder results from the implantation and development of the placenta in the lower uterine segment?
OverLord2011 [107]

Placenta Previa

Placenta Previa is a disorder that arises from the implantation and development of the placenta in the lower segment of the uterine. The cause of this disorder is unknown. The three types of placenta previa are complete, partial and marginal previa. The most common symptom of placenta previa is painless bleeding during the third trimester.






8 0
3 years ago
One set of coat color alleles in guinea pigs is multiple allelic. When homozygous the phenotypes are: CC, black; c k c k , sepia
mario62 [17]

Answer:

done

Explanation:

8 0
3 years ago
nucleotides, which are the building blocks of nucleic acids, consist of a phosphate group, a nitrogenous base, and a? A. lipid B
stiv31 [10]
I believe it's B. 5 carbon sugar
8 0
3 years ago
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