Answer:
The correct answer would be -
RGCB daughter - 0%
RGCB sons - 100%
Explanation:
Red-green color blindness is a sex-linked recessive disease that means it will only express in absence of the normal allele that is present on X-chromosomes. As it is known that males have only one X-chromosomes therefore, the chances are more in males to be affected in presence of the recessive gene. In this given case women s RGCB and man has normal vision. The genotype of women would be both recessive alleles XcXc and genotype of man would be XY.
The gametes would be - Xc, Xc and X, Y
then the cross:
Xc Xc
X XXc XXc
Y XcY XcY
so the offspring would be -
Carrier female = XXc (50% chance in total and 100% in daughters)
RGCB daughters = 0%
RGCB male = XcY (100% in sons and 50% of total children)
False because they are always repuducing
Analogy, in biology, similarity of function and superficial resemblance of structures that have different origins. For example, the wings of a fly, a moth, and a bird are analogous because they developed independently as adaptations to a common function—
THis is the link i used
flying.https://www.britannica.com/science/analogy-evolution
The image section D represents two chromosomes, each with 1 chromatid, whereas C image is a chromosome composed of two sister chromatids.
<h3>What are sister chromatids?</h3>
Sister chromatids can be defined as two DNA molecules linked at the centromere level before Meiosis II.
During Anaphase II (Meiosis II), sister chromatids separate to form two independent chromosomes that migrate to opposite poles, where homologous chromosomes separate at Anaphase I.
In conclusion, the image section D represents two chromosomes, each with 1 chromatid, whereas C image is a chromosome composed of two sister chromatids.
Learn more about Meiosis I here:
brainly.com/question/8253366
#SPJ1
The question is incomplete as it does not have the options which are:
A) Tomas' family is of Asian descent.
B) Tomas' family members with sickle cell anemia have a defect in the structure of the protein chains of hemoglobin.
C) Tomas' family historically has consumed a low-protein diet.
D) All of the above are true.
Answer:
Option-B
Explanation:
Sickle cell anaemia is a disorder which is caused by the mutation of the sequence of the DNA which codes for haemoglobin.
The mutation takes place at sixth position in which the glutamic acid codon is changed to valine codon. This mutation changes the shape of the hemoglobin.
This mutation changes the shape of the haemoglobin molecule from circular ellipsoidal to sickle shape and thus reduces the amount of oxygen in the blood.
In the given question, if the person studies that many family members of Thomas have this disease therefore it can be predicted that the haemoglobin protein in them will be changed to a sickle shape.
Thus, Option-B is correct.
