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2 years ago

Exchange of gases in plants occur through:

Biology

1 answer:

yuradex [85]2 years ago

4 0

Answer:

(A): through the stomata

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Are organisms in the same family also in the same class

Bingel [31]

I think they are not

8 0

3 years ago

Can someone help I don’t know

stellarik [79]

1. Female, white fur

2. Male, white fur

3. Male, white fur

4. Female, white fur

Q3.) 2 generations (parents and offspring)

8 0

2 years ago

In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite f

Simora [160]

Answer:

The question lacks options, the options are:

A) 1 out of 16

B) 3 out of 16

C) 6 out of 16

D) 9 out of 16

The answer is 1 out of 16

Explanation:

This is a DIHYBRID cross because it involves two different genes coding for distinct traits. One of the traits will be dominant while the other recessive. Hence, parents that are purebred for opposite forms of the trait means that one parent is homozygous dominant while the other is homozygous recessive. When these two parents cross, they produce F1 offsprings that all possess the dominant trait but heterozygous/hybrids.

When these hybrids are self-crossed, they produce four different combinations of gametes which when crossed using a punnet square will result in F2 offsprings with a 9:3:3:1 phenotypic ratio according to Mendel's observation.

9 represents offsprings that are dominant for both traits

The two 3's represents offsprings that are recessive for one trait and dominant for the other respectively.

1 represents offsprings that are homozygous recessive for both traits.

Hence, 1 out of 16 offsprings will be homozygous recessive for both traits.

4 0

3 years ago

In the spotted tulip, white flowers are dominant to yellow (gene Y), and axial flowers are dominant terminal flowers (gene T). E

aleksklad [387]

Answer:

9/16 A_B_ White colour, axial flower

3/16 A_bb White colour, terminal flower

3/16 aaB_ Yellow colour, axial flower

1/16 aabb Yellow colour, terminal flower

Explanation:

Let the flower colour allele be represented by A and the flower position by B. The dominant white colour would be A while the alternate version (the yellow colour) would be a. Also, the dominant axial flower position would be B while the alternate terminal position would be b.

The Punnet's square result of crossing two plants that are heterozygous for both traits is as in the attached image.

AaBb x AaBb

Possible Offspring

9/16 A_B_ White colour, axial flower

3/16 A_bb White colour, terminal flower

3/16 aaB_ Yellow colour, axial flower

1/16 aabb Yellow colour, terminal flower

3 0

2 years ago

Which cellular change in an organism could be inherited by

elixir [45]

The answer is 3

Hope that helps! :)

7 0

3 years ago