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#Question id: 12770


Which of the following graphs illustrates the population growth curve of single bacterium growing in a flask of ideal medium at optimum temperature over a 24 -hour period? 


#Unit 10. Ecological Principles
  1. A
  2. B
  3. C
  4. D
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TLS Online TPP Program

#Question id: 3590

#Unit 8. Inheritance Biology

Following parental cross and their expected progeny given in table

Parental cross

Expected progeny

A- AaBbCCDd X aaBBCcDD

I-   aabbccDd

B- AabbccDD X AaBbCcdd

II-  AAbbccDD

C- aaBbCCDd  X aabbCcDd

III- aabbCcDd

D- AabbccDD X AABbCcDd

IV-AaBBCcDD

Which of the correct matching of parental cross with their expected progeny?

TLS Online TPP Program

#Question id: 3591

#Unit 8. Inheritance Biology

Consider three yellow, round peas, labeled A, B, and C. Each was grown into a plant and crossed to a plant grown from a green, wrinkled pea. Exactly 100 peas issuing from each cross were sorted into phenotypic classes as follows

A:        51 yellow, round

            49 green, round

B:      100 yellow, round

C:  24 yellow, round

      26 yellow, wrinkled

      25 green, round

      25 green, wrinkled

What were the genotypes of A, B, and C respectively?

TLS Online TPP Program

#Question id: 3592

#Unit 8. Inheritance Biology

In garden peas, tall (T) is dominant to short (t), Purple Flowers are (P) dominant to white flowers (p), Axial flowers (A) are dominant to terminal flowers (a), and yellow seeds (G) are dominant to green seeds (g). An individual from a true breeding line of tall, purple flowered, axial-flowered, yellow seeded pea plants is mated to an individual from a true breeding line of short, white flowered, terminal-flowered, green-seeded plants. The F1 are allowed to self-fertilize and produce an F2. What proportion of the F2 is expected to exhibit purple flowers and yellow seeds?

TLS Online TPP Program

#Question id: 3593

#Unit 8. Inheritance Biology

In the cross Aa Bb Cc Dd X Aa Bb Cc Dd, in which all genes undergo independent assortment, what proportion of offspring are expected to be at least one heterozygous for locus gene?

TLS Online TPP Program

#Question id: 3594

#Unit 8. Inheritance Biology

following different cross allowed and their respective phenotype.

Character

Male genotype

Female genotype

Progeny phenotype

M

Aa

Aa

3:1

N

Aa

aa

1:1

O

Aa

AA

1:1

P

Aa

AA

1

Which of the following observation conclude correct mode of dominance?

TLS Online TPP Program

#Question id: 3595

#Unit 8. Inheritance Biology

Ranch mink with the dark gray coat color known as Aleutian is homozygous recessive aa. Genotypes AA and Aa have the standard deep brown color. A mating of Aa  X Aa produces  four  pups. What is the probability of a perfect 3 : 1 distribution of standard to Aleutian?