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hichkok12 [17]
3 years ago
15

Sickle cell anemia is produced by a genetic defect in the amino acid sequence of hemoglobin. Persons who are homozygous for this

allele have abnormal red blood cells, which characterize the disease. The blood cells of heterozygous persons appear normal and they are considered carriers. A test reveals that a man is heterozygous for the sickle cell allele but his wife is homozygous normal.
What is the probability of their children will be carriers of the disease allele?
Biology
1 answer:
JulijaS [17]3 years ago
8 0

Answer:

The probability is 1/2

Explanation:

Heterozygous for sickle cell allele is AS

Homozygous allele is SS

AS SS

The offspring formed include

AS, AS, SS, SS

The probability of their children being carriers include

Number of AS/ Total number of offspring

= 2/4 =1/2 or 0.5

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Answer:

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What is a gene? Can someone tell me what is Euchromatin? Is Euchromatin also called a Gene? What's the difference between these
julsineya [31]

Answer:

In biology, a gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA.

Euchromatin is a lightly packed form of chromatin that is enriched in genes, and is often under active transcription. Euchromatin comprises the most active portion of the genome within the cell nucleus. 92% of the human genome is euchromatic.

The genes present in heterochromatin are usually inactive. The genes present in euchromatin are either already active or will be active during growth. Heterochromatin is transcriptionally-inactive. Euchromatin is transcriptionally. (This one here is the difference)

5 0
3 years ago
When a gene changes within a population over time, it is referred to as __________.
yarga [219]
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3 0
3 years ago
A plant cell placed in a solution with a lower (more negative) water potential will _____. view available hint(s) a plant cell p
nlexa [21]

Answer:

Lose water and plasmolyze

Explanation:

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  • During the process of osmosis water moves from a region of higher water potential to a region of lower water potential.
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3 years ago
In a typical monohybrid cross, all of the offspring in which generation will exhibit a single trait without blending?
Alexus [3.1K]

In F1 mono-hybrid cross, all of the offspring in which generation will exhibit a single trait without blending. It is one parents id homozygous for one allele, and other parents is homozygous for the allele.

Mono-hybrid cross used to identify the dominance relation between two alleles.  The hybrid of two organism with homozygous genotype which result in the opposite phenotype for genetic trait.

Mendel start this with the pair of pea plant by two contrasting trait such as tall and other one is dwarf. The cross pollination with each other which resulted that all plants are tall and this is called first hybrid generation or F1 progeny.

To learn more about F1 mono-hybrid cross here

brainly.com/question/11162425

#SPJ4

6 0
2 years ago
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