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dybincka [34]
2 years ago
15

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plant

s that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?
Biology
2 answers:
OleMash [197]2 years ago
5 0

The scientist can conclude that the plants that were used in this experiment contained both a dominant and recessive allele. That the plants were hybrids which causes the off springs to have a 3:1 ratio.

ICE Princess25 [194]2 years ago
4 0

The scientist can conclude that both or one of the pea plant (either white or purple) has or possesses recessive alleles. Also this cross can be possibly between a heterozygous dominant and homozygous recessive pea plant. Suppose the white pea plant is homozygous recessive (ww) and the purple plant is heterozygous dominant (Pw) then the cross between the two would result into  

Pw x ww

Pw, Pw, ww, ww

Thus the offsprings have both purple and white flowers.

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A DNA sequence that is 15 nucleotides long would give rise into a polypeptide sequence that was how many amino acids long?
Elena-2011 [213]

A DNA sequence that is 15 nucleotides long would normally give rise to a polypeptide sequence that would be 5 amino acids long. This is assuming that all the nucleotides in the DNA sequences are strictly coded to form only sense codons and not a single nonsense codon, also called termination codon

A sense codon is a set of three nucleotides also called a triplet, that codes for a particular amino acid. A DNA sequence of 15 nucleotides has 5 codons.

A nonsense or termination codon is one that does not code for any amino acid. There are three nonsense codons found on mRNA, and these are UAA, UAG and UGA.  So if the DNA sequence has one of these, then the amino acids  in the polypeptide chain will be 4 in number


7 0
3 years ago
Why are there different numbers of high and low tides in various places
Sphinxa [80]

Answer:

Because the location of the continents has an effect on the tidal bulge caused by

gravitational forces

7 0
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After you eat lunch, nerve cells in your stomach respond to the distension (the stimulus) resulting from the food. This is best
strojnjashka [21]

Answer:

stimulus, control center

Explanation:

The control center is the main nervous system of the brain that is used to carry out different sensory, the motor and integration of data.

The stimulus control is the behavioral control that is described as the situations where behavior is triggered by the presence or the absence of any stimulus. Stimulus is the functional reaction in a tissue or any organ.

In the context, the nerve cells in the stomach responds to the stimulus that results from the foods after eating food is a mechanism between the stimulus and the control center.

7 0
3 years ago
How many chromosomes are in the daughter cells after meiosis is completed?
Paha777 [63]

Answer:

<u>23</u> chromosomes

Explanation:

Each daughter cell <u>will have half of the original 46 chromosomes</u>, or 23 chromosomes. Each chromosome consists of 2 sister chromatids. The daughter cells now move in to the third and final phase of meiosis: meiosis II.

5 0
2 years ago
Read 2 more answers
Which describes the chromosomes by the end of prophase II of meiosis?
Rama09 [41]
B because the diploids always line up in the middle on chromosomes
4 0
3 years ago
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