Answer:
b.It increases the likelihood that daughter cells contain different genetic material.
Explanation:
Morgan and Cattell for the first time used the term ‘crossing over’. Crossing over takes place during prophase I of meiosis. During crossing over, chromosome segments of non-sister chromatids of homologous chromosomes get exchanged. As a result, the daughter cells acquire different genetic materials. Thus, it provides genetic variation by creating a new combination of genes or get recombination and produces hybrids.
Allele that causes yellow eyes (Y) is
dominant over the allele that causes orange eyes (y)
Y = 85% = 0.85 and
y = 100% - 85% = 15% = 0.15
f(y) = square root of y = √y = √0.15 =
0.387
frequency of the allele that causes
orange eyes = 0.387
Once we know the value of y, Y + y = 1
Putting the value of y, we get
Y = 1 – 0.387
<span>Frequency of the dominant allele that
causes yellow eyes = 0.61</span>
The false statement is: (a) Transcriptional regulators usually interact with the sugar–phosphate backbone on the outside of the double helix to determine which DNA sequence to bind.
Transcriptional regulator or factor is protein with the ability to control and regulate gene expression at the transcription level by binding to DNA. Transcriptional factors have domain-DNA-binding domain which contains structural motif that recognizes DNA and it is responsible for the attachment to specific DNA sequence. It usually binds to the DNA major groove (hydrogen bonding) because it is less degenerate than that of the DNA minor groove.
Transcriptional factors also contain trans-activating domain for the binding of other proteins and signal-sensing domain for the detection of external signals.
Answer:
the correct answer is the equator
