1. X or Y
a sperm has either X chromosome or Y chromosome in it. When a sperm containing X chromosome fertilises an egg the zygote has XX chromosome in it, which is a girl child. whereas when a sperm containing Y chromosome fertilises an egg it results into a boy child.
2. X chromosome.
an egg always contains X chromosome in it.
3. normally a person receives 22 autosomes from each parent.
a human being has 46 chromosomes of which 22 autosomes are from each parent and the remaining 1 pair is the gametes which decides the sex of the person.
6) A human cell containing 22 autosomes and a Y chromosome is A) a somatic cell of a female. B) a sperm C) a somatic cell of a male. D) an egg. E) a zygote.
1) If the egg with two copies of chromosome 21 were fertilized by a normal sperm how many copies of chromosome 21 would there be in the zygote? 2) How many copies of chromosome 21 would there be in each cell in the embryo that developed from this zygote?
7) Chromosome I from your mother and chromosome I from your father are said to be homologous. This is because the chromosomes: A) appear the same size in a karyotype. B) have different genes on them. C) have the same genes on them. D) determine the sex of the child. 8) Why do karyotypes always show chromosomes at the point when cell division is about to occur? A) This is the only cell cycle point in which the chromosomes are unduplicated. B) The...
please help Question 1 (Mandatory) (2 points) A gamete from a human male contains: 22 autosomes and either an X or a Y chromosome. 23 autosomes and either an X or a Y chromosome. 23 autosomes and an X chromosome. 23 autosomes and a Y chromosome. 22 autosomes, one X chromosome, and one Y chromosome. Question 2 (Mandatory) (2 points) A karyotype you are viewing shows an extra piece of chromosome 1 attached to chromosome 22. What type of abnormality...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg in Telophase 2 and zygote formation after Cytokinesis 2 Question 3 1 pts Pg 99. Why is it essential that each gamete receive only one set of chromosomes, in other words. why must gametes be haploid? Because a haploid gamete can then fuse with a diploid egg or diploid sperm which promotes fertilization and development of a zygote. Because when gametes fuse in fertilization,...
What is a diploid cell? One that has two copies of each chromosome – one from mom and one from dad. A cell that carries the mutation for Cystic Fibrosis. Another term for a sperm or egg cell. A cell that carries only one copy of the X chromosome
Question - Predict the types of gametes that are formed if non-disjunction of the Y chromosome occurs in the 2nd division. Click on all the different possible gamete types of sperm that could be formed (in terms of the X and Y chromosome, assume that the gamete is normal, having one of all the other chromosome types) 1. X (normal) 2. Y (normal) 3. no X or Y (abnormal) 4. XY (abnormal) 5. YY (abnormal) 6. XX (abnormal)
Observation: Sex Chromosome Anomalies A female with Turner syndrome (XO) has only one sex chromosome, an X chromosome; the O signifies the absence of the second sex chromosome. Because the ovaries never become functional, these females do not undergo puberty or menstruation, and their breasts do not develop. Generally, females with Turner syndrome have a short build, folds of skin on the back of the neck, difficulty recognizing various spatial patterns, and normal intelligence. With hormone supplements, they can lead...
Human Sexuality Question 1 Women no longer undergo menstruation after menopause. Answers: True False Question 2 Eggs must carry what type of chromosome for the sex-chromosome? Answers: Eggs carry an ONE X chromosome. Eggs carry an ONE Y chromosome Eggs carry an TWO X chromosomes Eggs can carry either a Y or an X chromosome Question 3 How long does a typical menstrual cycle last? Answers: 28 days 14 days 7 days 3 days Question 4 What event occurs on...
In humans, there are _______ autosomal linkage groups, plus an X and Y chromosome linkage group. Select one: a. 23 b. 46 c. 22 d. 92