DP Biology (first assessment 2025)

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D. Continuity and Change » D3.2 Inheritance » D3.2.2. Methods for conducting genetic crosses in flowering plants

D3.2.2. Methods for conducting genetic crosses in flowering plants

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Directly related questions

SPM.1A.HL.TZ0.31: Female grasshoppers have XX sex chromosomes and males have XO, signifying a single X chromosome....
SPM.1A.HL.TZ0.31: Female grasshoppers have XX sex chromosomes and males have XO, signifying a single X chromosome....
SPM.1A.HL.TZ0.31: Female grasshoppers have XX sex chromosomes and males have XO, signifying a single X chromosome....
SPM.1A.HL.TZ0.31: Female grasshoppers have XX sex chromosomes and males have XO, signifying a single X chromosome....
23M.1A.SL.TZ2.16:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.13:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.13:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.16:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.16:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.13:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.13:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.1A.SL.TZ2.16:
The pedigree chart shows the inheritance of three generations of Duane syndrome, a condition caused by a dominant allele that affects alignment of the eyes.

_{[Source: Yang, M.-M., Ho, M. et al., 2013. Pedigree of a Chinese family with Duane retraction syndrome. [diagram online]}
_{Available at: https://www.researchgate.net/figure/Pedigree-of-a-Chinese-family-with-Duane-retraction-syndrome-}
_{Squares-men-circles_fig1_236921765 [Accessed 5 October 2021]. Public domain.]}

If individuals II:1 and II:2 had a third child, what is the probability that the child would have Duane syndrome?

A. 25 %

B. 50 %

C. 75 %

D. 100 %
23M.2.SL.TZ2.2b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.2b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.2b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.2b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.b:
Using a Punnett grid, explain the results of this cross.
23M.2.SL.TZ2.2c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.
23M.2.SL.TZ2.2c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.
23M.2.SL.TZ2.c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.
23M.2.SL.TZ2.2c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.
23M.2.SL.TZ2.2c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.
23M.2.SL.TZ2.c:
Suggest a reason for the F₂ generation not corresponding exactly to the expected ratio of purple-flowered and white-flowered plants.

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