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3 years ago

The pollen

Biology

1 answer:

Nana76 [90]3 years ago

4 0

Answer:

The correct answer is B. The pollen cone contains the male gametophytes.

Explanation:

The cone is the reproductive organ of bare pollinators. Cones are not flowers but transformed stems or shoots without flower petals. In cones, male and female storages sit together in a shoulder-shaped arrangement on a short leg. Both males and females grow on pine. In male cones that are similar in most conifers, pollen matures, but the male cones wither quickly after the pollen has faded away.

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A trihybrid cross is a cross between two individuals who are heterozygous for three genes. For example: AaBbCc x AaBbCc. Assumin

Mariulka [41]

Answer:

27:9:9:9:3:3:3:1

Explanation:

The gametes of the parental genotypes would be

ABC, ABc, AbC, aBC, Abc, aBc, abC, abc

The cross between AaBbCc and AaBbCc will result into following offspring (image is also attached)

ABC ABc AbC aBC Abc aBc abC abc

ABC AABBCC AABBCc AABbCC AaBBCC AABbCc AaBBCc AaBbCC AaBbCc

ABc AABBCc AABBcc AABbCc AaBBCc AaBbcc AaBBcc AaBbCc AaBbcc

AbC AABbCC AABbCc AAbbCC AaBbCC AAbbCc AaBbCc AabbCC AabbCc

aBC AaBBCC AaBBCc AaBbCC aaBBCC AaBbCc aaBBCc aaBbCC aaBbCc

Abc AABbCc AABbcc AAbbCc AaBbCc AAbbcc AaBbcc AabbCc Aabbcc

aBc AaBBCc AaBBcc AaBbCc aaBBCc AaBbcc aaBBcc aaBbCc aaBbcc

abC AaBbCC AaBbCc AabbCC aaBbCC AabbCc aaBbCc aabbCC aabbCc

abc AaBbCc AaBbcc AabbCc aaBbCc Aabbcc aaBbcc aabbCc aabbcc

The genotype ratio is 27:9:9:9:3:3:3:1

5 0

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