Some plant species produce male and female individuals in
which...

Question

Some plant species produce male and female individuals in 
which the males have an XY genotype and the females have 
an XX genotype. After double fertilization, what would be the 
genotypes of the embryos and endosperm nuclei?
(A) embryo XY/endosperm XXX or embryo XX/endosperm XXY
(B) embryo XX/endosperm XX or embryo XY/endosperm XY
(C) embryo XX/endosperm XXX or embryo XY/endosperm XYY
(D) embryo XX/endosperm XXX or embryo XY/endosperm XXY

Accepted Answer

Hello everyone here We have a question saying both the male and female plants have the same genotype which is capital T. Lowercase T. How will the double fertilization process affect the genotype of the embryo? An embryo sperm nuclei. So we have the sperm and we have the egg which is lower case T. And then we have the fusion nuclei which is capital T. Plus lower case T. So in our first case scenario our sperm is going to be capital T. Because it's genotype is capital T. Lowercase T. And the egg will be capital T. Lowercase T. So the fusion nuclei CAPITAL T. Plus lower case T. Would be capital T. Capital T. Lowercase T. And a sperm nuclei. Our second case scenario the sperm would be lower case T. And the egg would be lower case T. Lowercase T. And r. Fusion nuclei would be capital T. Lowercase T. Lowercase T. And a sperm nuclei. So our answer here is B. Embryo capital T. Lowercase T. Endo sperm capital T. Capital T. Lowercase T. Or embryo. Lowercase T. Lowercase T. Endo sperm capital T. Lowercase T. Lowercase T. Thank you for watching. Bye.

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