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uranmaximum [27]
3 years ago
13

4. Photosynthesis is performed by what​

Biology
2 answers:
dolphi86 [110]3 years ago
7 0
By all plants, algae, and some microorganisms
LUCKY_DIMON [66]3 years ago
4 0

Answer:

Photosynthesis is performed by chlorophyll

Explanation:

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Genes have many regulatory sites that control gene expression, one of these is called the enhancer.
madam [21]

Answer:

a) The enhancer site is a distal control site many nucleotides upstream from the promoter site, and activates the initiation complex of transcription.

Explanation:

Enhancers are the regulatory DNA sequences that are generally located quite away from the coding regions of a gene. These sequences are mostly present upstream of promoter sequences. Enhancers regulate the gene expression by stimulating the formation of an active transcription initiation complex and thereby, increase the rate of RNA synthesis. Enhancers also serve as the binding site for specific regulatory proteins. These proteins bound to the enhancers then activate transcription by interacting with the proteins bound to the promoters.

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Suppose a species of tulip has three alleles for the gene that codes for flower color. The <img src="https://tex.z-dn.net/?f=C%5
givi [52]

Answer:

1. 2 red: 2 purple

2. 2 red: 1 purple: 1 white

Explanation:

For this question, you need to create two separate punnett squares. The first punnett square would have C^R over one square with C^P in the square next to it, and on the other side would C^P next to one square and C^W next to the square below it. It doesn't matter what side you put the alleles on, just make sure the same alleles of the same flower are on the same side. Then, in order to find the phenotype, or in this case the color of the flowers' offspring, follow the dominance rules the question gave you. Remember, alleles don't have to be homozygous to determine what color they will be. Just make sure that the dominant allele is the allele used to determine the color. The same rules will apply for the second punnett square, and then you should get your answer. Hope this helps! :)

3 0
3 years ago
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