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Ksenya-84 [330]
3 years ago
12

Using the illustration above, why are the chromosomes in two of the sex cells different from the chromosomes in the parent cell?

Biology
1 answer:
Misha Larkins [42]3 years ago
8 0

Answer: A  the chromosomes from another parent cell were introduced

Explanation: A child is created when the male sex cell joins the female cell. If the male and female sex cells had the standard number of chromosomes, as is found in body cells then the zygote (baby) would have double that number of chromosomes. The number of chromosomes would keep doubling every generation. To avoid this doubling the parent's body cells split by miosis which halves the number of chromosomes and so when the sex cells join the total number of chromosomes is the same as that found in the parent's body cells.

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The gene D controls wing shape in flies and has two alleles: D is wild-type and dominant, and d is recessive and causes flies to
Juliette [100K]

Answer:

7 % progeny will show wild type phenotype

Explanation:

Parent 1: Normal wings and small eyes : DDee

Parent 2 : Downward wings and normal eyes : ddEE

DDee X ddEE = DdEe ( All have normal wings and normal eyes )

When a F1 individual is test crossed:

DdEe X ddee =

De/de = Parental

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DE/de = Recombinant

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4 years ago
A certain type of flower has two alleles for color (blue, purple), and two alleles for stem height (tall, short). A tall blue fl
larisa86 [58]

Answer:

Mendel's law of independent assortment

Explanation:

Gregor Mendel is a really important figure in genetics, his work on pea plants provided us with many of the fundamentals of genetics that we still have today!

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2. The law of segregation - this law states that offspring will inherit one allele from each parent, because allele pairs separate in the process of meiosis, such that each gamete contains 1 allele of each trait. When the zygote is formed, it contains an allele from each parent.

3. The law of independent assortment - this law states that traits are independent from one another at the time of gamete formation. The genes are segregated separately from one another, as the presence of one does not impact the presence of another.

This example shows that all combinations of the height and color allele are possible, and therefore nicely demonstrates the law of independent assortment

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1pt Which statement about red blood cells is NOT true?
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Answer:

A

Explanation:

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