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jenyasd209 [6]
3 years ago
13

A model of cell division is shown here. A student evaluates the model and makes the claim that the cell division increases genet

ic variation in the daughter cells. Which evidence from the model supports the student's claim?
A) Chromosomes pair in step 2.
B) Chromatids separate in step 5.
C) Chromosomes are replicated in step 1.
D) Chromosomes exchange genetic material in step 3.
Biology
2 answers:
xxTIMURxx [149]3 years ago
5 0
D) chromosomes exchange genetic material in step 3

Explanation: the student claims that the cell division increases genetic variation, and D) is the only one which mentions exchanging genetic material/increasing variation
german3 years ago
4 0

Answer:

d

Explanation:

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In humans, the eye color and hair color genes are located on different chromosomes. Brown eyes (B) are dominant to blue (b), and
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Answer:

Man's genotype: Bbdd

Woman's genotype: bbDd

First child's genotype: Bbdd

Second child's genotype: bbDd

Explanation:

This is a dihybrid cross involving two genes; one coding for eye color and the other for hair color in humans. The allele for brown eye (B) is dominant over the allele for blue eyes (b) in the first gene while the allele for dark hair (D) is dominant over the allele for red hair (d) in the second gene.

According to the question, A man with brown eyes and red hair will possibly possess genotypes: BBdd or Bbdd while a woman with blue eyes and dark hair will possibly have genotype: bbDD or bbDd. Considering the fact that they produced children with recessive traits for both gene (blue eyes and red hair), it means that they are heterozygous for their dominant trait. This means that the ideal genotype for the man is Bbdd since he will produce gametes containing B and b alleles for the first gene while the ideal genotype for the woman is bbDd since it will produce gametes with D and d allele for the second gene.

Hence, a child with brown eyes and red hair will possess genotype: Bbdd since he/she cannot receive two dominant alleles for the first gene from both parents. A child with blue eyes and dark hair will have genotype: bbDd since he/she cannot receive two dominant alleles of the second gene from both parents.

3 0
3 years ago
Put in order the steps of the process associated with a course assignment
Fynjy0 [20]

Here is the methodology associated with the process of a course assignment:

1. Faculty member develops assignment and grading rubric.

2. The assignment is posted in the class.  

3. The student reads assignment and rubric.      

4. Student completes the assignment.

5. Student submits the assignment.

6. Faculty reviews submitted assignment and compares to grading rubric.

7.  Faculty grades assignment.

8. Student receives grade and feedback.

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Which molecule is a reactant in the first step and a final product in the fourth step of the Calvin-Benson cycle?
Sveta_85 [38]
CO2molecule is a reactant in the first step and a final product in the fourth step of the Calvin-benson
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The enzyme responsible for ATP production?
vekshin1

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A scientist is using a light microscope to observe a sample of muscle tissue. By analyzing the cellular structure and organizati
Dimas [21]

Answer:

The correct answer is option D. "whether the muscle moved the skeleton, the heart, or another type of internal organ".

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It is possible to determine whether a sample of muscle tissue moved the skeleton, the heart, or another type of internal organ by analyzing its cellular structure and organization. For instance cardiac muscle is striated and organized into sarcomeres, while smooth muscle that is located in organs such as intestines, uterus and stomach are not organized into sarcomeres.

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