HOTAIR is a lncRNA whose gene is found in the Hox C cluster in humans, but it acts by regulating expression of the Hox D genes on another chromosome (in trans) by recruiting to that locus Polycomb Repressive Complex 2. Which of the following statements is/are correct regarding this regulation?

TLS Online TPP Program

#Question id: 19026

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:

                             

Assume Hardy-Weinberg equilibrium, the frequencies of the A and B alleles are 0.26 and 0.07, respectively. You now examine the ABO blood types in yet another population. You observe that the AB blood type has a frequency of 0.50 in this population. What are the frequencies of the A and O alleles in this population?

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#Question id: 19027

#Unit 9. Diversity of Life Forms

The following characteristics all helped seedless plants become better adapted to land except 

TLS Online TPP Program

#Question id: 19028

#Unit 9. Diversity of Life Forms

Sporophylls can be found in which of the following? 

TLS Online TPP Program

#Question id: 19029

#Unit 9. Diversity of Life Forms

Assuming  that  they all belong to the same plant, arrange the following structures from largest to smallest (or from most inclusive to least inclusive). 

1. Spores                 2. Sporophylls 

3. Sporophytes 4. Sporangia 

TLS Online TPP Program

#Question id: 19030

#Unit 9. Diversity of Life Forms

Of the following list, flagellated (swimming) sperm are generally present in which groups? 

1. Lycophyta                 2. Bryophyta 

3. Angiosperms 4. Chlorophyta 

5. Pterophyta 

TLS Online TPP Program

#Question id: 19031

#Unit 9. Diversity of Life Forms

which of the following is not evidence that charophytes are the closest algal relatives of plants?